In addition to files and Mongo collections, JSON as well as XML and CSV data can be retrieved
from the net as answers from REST queries. Because it uses and external package (cpprestsdk)
this is currently available only to MariaDB servers compiled from source.

-- Add the REST support when Microsoft Casablanca package (cpprestsdk) is installed.
-- Add compile flags needed on Windows /MD or /MDd (debug)
-- Also include some changes specific to MariaDB 10.3.
  modified:   storage/connect/CMakeLists.txt

-- Add conditional REST support
-- Added string options HTTP and URI.
-- Added added internal table type TAB_REST.
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/mycat.cc
  modified:   storage/connect/mycat.h
  modified:   storage/connect/plgdbsem.h

-- Add conditional code based on the preprocessor definition MARIADB
-- This to be able to use the same code in CONNECT and EOM modules
  modified:   storage/connect/osutil.h
  modified:   storage/connect/tabrest.cpp

-- Add files for the REST OEM module
  added:      storage/connect/mini-global.h
  added:      storage/connect/rest.def

-- Fix MDEV-19648 Variable connect_conv_size doesn't change
-- Change Variable wrong block parameter from 8169 to 1.
-- Also change connect_conv_size default value to 1024.
  modified:   storage/connect/ha_connect.cc

-- Fix compilation error when ZIP is not supported
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/tabfmt.cpp

-- Replace PlugSetPath by some concat (crashed on Fedora) + typo
  modified:   storage/connect/reldef.cpp

-- Avoid possible buffer overflow
-- In particular by the function ShowValue.
  modified:   storage/connect/tabdos.cpp
  modified:   storage/connect/tabfmt.cpp
  modified:   storage/connect/value.cpp
  modified:   storage/connect/value.h

-- Add some cast to avoid some compiler warnings
  modified:   storage/connect/filamdbf.cpp

-- Fix some C++ error
  modified:   storage/connect/javaconn.cpp
  modified:   storage/connect/jmgoconn.cpp
  modified:   storage/connect/plugutil.cpp

-- Add some tracing + typo
  modified:   storage/connect/mycat.cc
  modified:   storage/connect/tabjson.cpp

-- Add the xtrc tracing function
  modified:   storage/connect/global.h
  modified:   storage/connect/plugutil.cpp

-- Modify tracing to use xtrc and some typo
  modified:   storage/connect/array.cpp
  modified:   storage/connect/block.h

-- Miscellaneous Typo and warning suppressing changes
  modified:   storage/connect/connect.cpp
  modified:   storage/connect/connect.h
  modified:   storage/connect/filamvct.cpp
  modified:   storage/connect/inihandl.cpp
  modified:   storage/connect/jsonudf.cpp
  modified:   storage/connect/libdoc.cpp
  modified:   storage/connect/tabjson.cpp
  modified:   storage/connect/tabtbl.cpp
  modified:   storage/connect/tabxml.cpp
  modified:   storage/connect/user_connect.cc
  modified:   storage/connect/user_connect.h

-- Update failing test results and disbling
  modified:   storage/connect/mysql-test/connect/disabled.def
  modified:   storage/connect/mysql-test/connect/r/dir.result
  modified:   storage/connect/mysql-test/connect/r/grant.result
  modified:   storage/connect/mysql-test/connect/r/jdbc.result
  modified:   storage/connect/mysql-test/connect/r/jdbc_postgresql.result
  modified:   storage/connect/mysql-test/connect/r/xml.result
  modified:   storage/connect/mysql-test/connect/r/xml2.result
  modified:   storage/connect/mysql-test/connect/r/xml2_mult.result
  modified:   storage/connect/mysql-test/connect/r/xml_mult.result

-- Add an option
  modified:   storage/connect/mysql-test/connect/t/grant.test

  Fixed by replacing sprinf by snprintf in ShowValue to avoid
  buffer overflow. It nows always use a buffer and returns int.
  modified:   storage/connect/tabdos.cpp
  modified:   storage/connect/tabfmt.cpp
  modified:   storage/connect/value.cpp
  modified:   storage/connect/value.h

  simple UPDATE statement from trigger or stored procedure
  modified:   storage/connect/tabext.cpp
  modified:   storage/connect/tabext.h
  modified:   storage/connect/tabjdbc.cpp

- Enable CONNECT tables to have triggers
  Update version number
  modified:   storage/connect/ha_connect.cc

- Make user and password defined in CREATE TABLE have precedence on
  the ones specified in a Federated Server.
  modified:   storage/connect/tabjdbc.cpp

- JSONColumns: Copy locally constant strings to fix error in OEM modules
  modified:   storage/connect/tabjson.cpp

  (and prepare new table types)

  modified:   storage/connect/tabjson.cpp
  modified:   storage/connect/tabjson.h
  modified:   storage/connect/tabxml.cpp
  modified:   storage/connect/tabxml.h

- Fix wrong line estimate
  modified:   storage/connect/mysql-test/connect/r/part_table.result
  modified:   storage/connect/mysql-test/connect/t/part_table.test

  Suppress unused parameter from PlugSubSet
  modified:   storage/connect/global.h
  modified:   storage/connect/plugutil.cpp
  modified:   storage/connect/jsonudf.cpp
  modified:   storage/connect/tabjson.cpp
  modified:   storage/connect/user_connect.cc

- Fix a bug making column catalog XML tables fail
  modified:   storage/connect/tabxml.cpp

- Comment out wrong message
  modified:   storage/connect/ha_connect.cc

- Update error message when sorting an ODBC table fails
  modified:   storage/connect/tabodbc.cpp

- Add error message when gettting an address
  from an OEM fails.
  modified:   storage/connect/reldef.cpp

- Make some modifications useful for OEM module writting
  Export discovery functions for CSV, JDBC and XML
  Remove unuseful include from tabjson.h
  Move TDBXML::data_charset function from header file to source
  modified:   storage/connect/tabfmt.h
  modified:   storage/connect/tabjson.h
  modified:   storage/connect/tabxml.cpp
  modified:   storage/connect/tabxml.h

- Update test result
  modified:   storage/connect/mysql-test/connect/r/jdbc_oracle.result

  modified:   storage/connect/connect.cc
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/ha_connect.h
  modified:   storage/connect/tabjdbc.cpp
  modified:   storage/connect/tabmysql.cpp
  modified:   storage/connect/tabodbc.cpp

- MDEV-17212: Test if NumResultCols is implemented by the data source
  modified:   storage/connect/odbconn.cpp

- Change error type in Optimize
  modified:   storage/connect/ha_connect.cc

- Update version date
  modified:   storage/connect/ha_connect.cc

- Fix truncating error messages on first unrecognized latin1 character
  modified:   storage/connect/ha_connect.cc

- Fix MDEV-17343
  Reject multi-table UPDATE/DELETE commands that crash on some systems
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/tabext.cpp

- Try fix some failing tests
  modified:   storage/connect/mysql-test/connect/disabled.def
  modified:   storage/connect/mysql-test/connect/r/vcol.result
  modified:   storage/connect/mysql-test/connect/t/vcol.test
  modified:   storage/connect/mysql-test/connect/r/jdbc.result
  modified:   storage/connect/mysql-test/connect/r/jdbc_postgresql.result
  modified:   storage/connect/mysql-test/connect/r/mysql_exec.result
  modified:   storage/connect/mysql-test/connect/r/odbc_postgresql.result

- Typo
  modified:   storage/connect/global.h

  modified:   storage/connect/mysql-test/connect/r/xml2.result
  modified:   storage/connect/mysql-test/connect/t/xml2.test

  filamtxt.cpp: DOSFAM::RenameTempFile: Change sprintf to snprintf.
  filamvct.cpp: VECFAM::RenameTempFile: Change sprintf to snprintf.
  javaconn.cpp:
    Add JAVAConn::GetUTFString function.
    Use it instead of env->GetStringUTFChars.
    Fix wrong identation.
  javaconn.h: Add GetUTFString declaration.
  jdbconn.cpp:
    Use GetUTFString function instead of env->GetStringUTFChars.
  jmgoconn.cpp:
    Use GetUTFString function instead of env->GetStringUTFChars.
    Fix wrong identation.
  jsonudf.cpp: change 139 to BMX line 4631.
  tabjmg.cpp:
    Add ReleaseStringUTF.
    Fix wrong identation.
  tabpivot.cpp: Fix wrong identation.
  tabutil.cpp: TDBPRX::GetSubTable: Change sprintf to snprintf.
  modified:   storage/connect/filamtxt.cpp
  modified:   storage/connect/filamvct.cpp
  modified:   storage/connect/javaconn.cpp
  modified:   storage/connect/javaconn.h
  modified:   storage/connect/jdbconn.cpp
  modified:   storage/connect/jmgoconn.cpp
  modified:   storage/connect/jsonudf.cpp
  modified:   storage/connect/tabjmg.cpp
  modified:   storage/connect/tabpivot.cpp
  modified:   storage/connect/tabutil.cpp

- Fix MDEV-16895 CONNECT engine's get_error_message can cause buffer
                 overflow and server crash with long queries
  ha_connect_cc: Update version.
    get_error_message: Remove charset conversion.
  modified:   storage/connect/ha_connect.cc

- Fix a server crash on inserting bigint to a JDBC table
  JDBConn::SetUUID:
    Suppress check on ctyp that causes a server crash because ctyp
    can be negative and this triggers an DEBUG_ASSERT on return.
  modified:   storage/connect/jdbconn.cpp

- Delete an assert(qrp) from JCATPARM *AllocCatInfo that is called with
  qrp=NULL from JDBConn::SetUUID. Also delete a clone of this function
  that was duplicated in javaconn.cpp.
  modified:   storage/connect/javaconn.cpp
  modified:   storage/connect/jdbconn.cpp

- Update some disabled tests and results to avoid failure
  modified:   storage/connect/mysql-test/connect/r/jdbc.result
  modified:   storage/connect/mysql-test/connect/r/json_java_2.result
  modified:   storage/connect/mysql-test/connect/r/json_java_3.result
  modified:   storage/connect/mysql-test/connect/r/mongo_java_2.result
  modified:   storage/connect/mysql-test/connect/r/mongo_java_3.result
  modified:   storage/connect/mysql-test/connect/t/json_java_2.test
  modified:   storage/connect/mysql-test/connect/t/json_java_3.test
  modified:   storage/connect/mysql-test/connect/t/mongo_java_2.test
  modified:   storage/connect/mysql-test/connect/t/mongo_java_3.test

  modified:   storage/connect/filamvct.cpp
  modified:   storage/connect/tabvct.cpp

  modified:   storage/connect/filamtxt.cpp

- Fix compiler warnings
  modified:   storage/connect/domdoc.cpp
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/json.h
  modified:   storage/connect/jsonudf.cpp
  modified:   storage/connect/tabext.cpp
  modified:   storage/connect/tabjson.cpp
  modified:   storage/connect/tabjson.h

- Miscelleanous from 10.3
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/mycat.cc
  modified:   storage/connect/user_connect.cc

  Fixed in TDBJDBC::OpenDB because query can be null for updates
  modified:   storage/connect/tabjdbc.cpp

  Also handle Postgresql sending type VARCHAR for TEXT column and
  setting length to b x7FFFFFF when the length is unknown.
  modified:   storage/connect/Client.java
  modified:   storage/connect/JavaWrappers.jar
  modified:   storage/connect/JdbcInterface.java
  modified:   storage/connect/PostgresqlInterface.java
  modified:   storage/connect/global.h
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/jdbconn.cpp
  modified:   storage/connect/jdbconn.h
  modified:   storage/connect/mysql-test/connect/r/jdbc_postgresql.result
  modified:   storage/connect/mysql-test/connect/t/jdbc_postgresql.test
  modified:   storage/connect/mysql-test/connect/t/jdbconn.inc
  modified:   storage/connect/plgdbsem.h
  modified:   storage/connect/tabjdbc.cpp
  modified:   storage/connect/tabjdbc.h
  added:      storage/connect/mysql-test/connect/std_data/JavaWrappers.jar

  modified:   storage/connect/ha_connect.cc

- Fix a bug causing CONNECT to loop when expanding a JSON column
  when the expanded column value is null or void array.
- Adding the FullArray option to JSON tables.
- Skipping expanded JSON lines when the expanded column value is null.
  modified:   storage/connect/connect.cc
  modified:   storage/connect/tabdos.h
  modified:   storage/connect/tabjson.cpp
  modified:   storage/connect/tabjson.h

- Fix MDEV-13353 No file privilege for ODBC, JDBC, MONGO, MAC, WMI file types.
  modified:   storage/connect/ha_connect.cc

- Make some Json UDFs  to accept a non JSON item as 1st parameter.
  modified:   storage/connect/json.cpp
  modified:   storage/connect/json.h
  modified:   storage/connect/jsonudf.cpp
  modified:   storage/connect/jsonudf.h

- Update Json UDF tests to cope with above changes.
  modified:   storage/connect/mysql-test/connect/r/json_udf.result
  modified:   storage/connect/mysql-test/connect/r/json_udf_bin.result
  modified:   storage/connect/mysql-test/connect/r/vcol.result
  modified:   storage/connect/mysql-test/connect/t/json_udf.test
  modified:   storage/connect/mysql-test/connect/t/vcol.test

- Fix some compiler warning treated as error
  PlugSubAlloc no more exported because it does throw.
  modified:   storage/connect/global.h
  modified:   storage/connect/ha_connect.cc
  modified:   storage/connect/jsonudf.cpp
  modified:   storage/connect/tabjson.cpp
  modified:   storage/connect/tabjson.h

- Other files modified (?) when going back to wrong merge
  modified:   storage/connect/CMakeLists.txt
  modified:   storage/connect/array.cpp
  modified:   storage/connect/colblk.cpp
  modified:   storage/connect/connect.cc
  modified:   storage/connect/csort.cpp
  modified:   storage/connect/domdoc.cpp
  modified:   storage/connect/filamap.cpp
  modified:   storage/connect/filamgz.cpp
  modified:   storage/connect/filamtxt.cpp
  modified:   storage/connect/filamzip.cpp
  modified:   storage/connect/filter.cpp
  modified:   storage/connect/fmdlex.c
  modified:   storage/connect/jdbconn.cpp
  modified:   storage/connect/macutil.cpp
  modified:   storage/connect/myconn.cpp
  modified:   storage/connect/odbconn.cpp
  modified:   storage/connect/plgdbutl.cpp
  modified:   storage/connect/plugutil.cpp
  modified:   storage/connect/preparse.h
  modified:   storage/connect/rcmsg.c
  modified:   storage/connect/rcmsg.h
  modified:   storage/connect/reldef.cpp
  modified:   storage/connect/tabdos.cpp
  modified:   storage/connect/tabfmt.cpp
  modified:   storage/connect/tabmac.cpp
  modified:   storage/connect/tabmul.cpp
  modified:   storage/connect/tabmysql.cpp
  modified:   storage/connect/tabmysql.h
  modified:   storage/connect/tabodbc.cpp
  modified:   storage/connect/tabtbl.cpp
  modified:   storage/connect/tabxml.cpp
  modified:   storage/connect/value.cpp
  modified:   storage/connect/xobject.cpp

  This is a test that will extended to some other UDF functions.
  modified:   storage/connect/json.cpp
  modified:   storage/connect/json.h
  modified:   storage/connect/jsonudf.cpp

MDEV-9962: encryption.innodb_encryption_filekeys stalled waiting for key encryption threads to decrypt all required spaces

Test changes.

MDEV-14814: encryption.innodb_encryption-page-compression failed in buildbot with timeout on wait condition

Problem is that if pages are in buffer pool there is no need for
decrypt or page decompression operations.

GAL-506 breaks galera_defaults MTR test by upping repl.proto_max again. Fix this once and for all by overwriting it with constant string since it makes little sense to check for it in this test.

  when the expanded column value is null or void array.
- Adding the FullArray option to JSON tables.
- Skipping expanded JSON lines when the expanded column value is null.
  modified:   storage/connect/connect.cc
  modified:   storage/connect/tabdos.h
  modified:   storage/connect/tabjson.cpp
  modified:   storage/connect/tabjson.h

lock_trx_release_locks(): Relax a debug assertion to allow
recovered TRX_STATE_COMMITTED_IN_MEMORY transactions.

trx_commit_in_memory(): Add DEBUG_SYNC instrumentation.

trx_undo_insert_cleanup(): Skip persistent changes if innodb_read_only
is set. This should only happen when a recovered committed transaction
would be cleaned up at shutdown.

        When table is renamed, the InnoDB's dictionary cache didn't
        change the ib_table->data_dir_path accordingly.
        Now it's set to NULL.

Before that line there is call to buf_page_get_gen that could
return block = NULL when decrypting a page fails. However,
we should set error to be != DB_SUCCESS also. In error log
there was error about decompression but in that code there
is one case where error is not set correctly.

add a test that restores the data from a binlog

Fix reinit_io_cache(WRITE_CACHE) with non-zero seek_offset.
Run encryption.tempfiles with and without binlog checksums.

The update was lost during merge.

Timing problem as sometimes table is marked as encrypted but
sometimes we are not sure and table is just marked missing.

Before killing the server, we have to FLUSH TABLES in order to
prevent the corruption of any MyISAM system tables.

PageConverter::adjust_cluster_record(): Instead of writing
the invalid value DB_ROLL_PTR=0, write a value that indicates
a fresh insert, that is, prevents the DB_ROLL_PTR from being
dereferenced in any circumstances.

It can be argued that IMPORT TABLESPACE should actually
update the dict_index_t::trx_id to prevent older transactions
from accessing the table, similar to what I did on table
rebuild in MySQL 5.6.6 in
https://github.com/mysql/mysql-server/commit/03f81a55f221095d397c375afe8a10c8038da339

Use unsigned comparison.

in gcc `-Wno-unsupported-something` will not be an error or even a warning,
so cmake will think the flag is supported. But if there's any other
warning during compilation, for any reason, unknown option will
be a warning too. Or an error when -Werror, even if that "other warning"
would not be an error on itself.

So we need to detect whether `-Wno-unsupported-something` is *really*
supported. Luckily, `-Wunsupported-something` will always fail with an
error.

So, whenever there's a need to detect if -Wno-something is supported,
test -Wsomething instead.