MDEV-4520: Assertion `0' fails in Query_cache::end_of_result on concurrent drop event and event execution

If there is no net.vio then query cache cant't get data via net_real_write() so it is better just do not try to cache such query.

replaced snippets_udf.cc with the latest version (2.0.8 from sphinxsource.com), fixed trivial errors on Windows.
It will be compiled and installed into plugins directory now.

if qc->try_lock() fails, it's not an error

(part 2)

change maria.distinct to use a function that doesn't require ssl-enabled  builds

with query cache, charset ucs2 and collation ucs2_unicode_ci

  @ mysql-test/r/ctype_ucs2_query_cache.result
  @ mysql-test/t/ctype_ucs2_query_cache-master.opt
  @ mysql-test/t/ctype_ucs2_query_cache.test
    Adding tests

  @ sql/sql_cache.cc
    Fixing not to use default_character_set->state_map,
    which can point to a non-ASCII character set (utc2, utf16, utf32)
   and thus have state_map undefined.

  - Fixed that wait_timeout_func and wait_timeout tests works on solaris
  - We have to compile without NO_ALARM on Solaris as Solaris doesn't support timeouts on sockets with setsockopt(.. SO_RCVTIMEO).
  - Fixed that compile-solaris-amd64-debug works (before that we got a wrong ELF class: ELFCLASS64 on linkage)
- Fixed some compiler warnings
- Fixed some failing tests

BUILD/compile-solaris-amd64-debug:
  Fixed that compile-solaris-amd64-debug works (before that we got a wrong ELF class: ELFCLASS64 on linkage)
configure.cmake:
  We have to compile without NO_ALARM on Solaris as Solaris doesn't support timeouts on sockets with setsockopt(.. SO_RCVTIMEO)
mysql-test/suite/parts/t/partition_basic_innodb.test:
  Mark test as big test (as otherwise we get timeout on our opensolaris machine in buildbot)
mysql-test/suite/rpl/t/rpl_cant_read_event_incident.test:
  Remove warning

        Now empty 'highlevel' packages strictly depend on the same versions of files.
        These are mariadb-server, mariadb-client, mariadb-test

per-file comments:
  debian/dist/Debian/control
MDEV-4266 Server upgrade via apt-get install does not work.
        dependencies on the current version added.
  debian/dist/Ubuntu/control
MDEV-4266 Server upgrade via apt-get install does not work.
        dependencies on the current version added.

        get_mm_leaf function can store all sorts of spatial features in
        one type of field it receives from an Item_field.
        So we just allow that by setting the type of this field to GEOMETRY.

per-file comments:
  mysql-test/r/gis-rtree.result
        result updated
  mysql-test/t/gis-rtree.test
        test case added.
  sql/opt_range.cc
        set geom_type=GEOMETRY if we got Field_geom.

mysql-test/suite/maria/maria-autozerofill.result:
  Updated result
mysql-test/suite/maria/maria-autozerofill.test:
  Added test that zerofilled table should not give any warnings when table is used
mysql-test/suite/maria/maria-recovery2.result:
  More tests to make it easier to find bugs
mysql-test/suite/maria/maria-recovery2.test:
  More tests to make it easier to find bugs
storage/maria/ha_maria.cc:
  Set create_trid after repair (needed if table was moved from another system)
  Set uuid after repair (needed if table was moved from another system)
storage/maria/maria_chk.c:
  Reset share->state.create_trid if we reset share->state.create_rename_lsn.
  Make the table moveable

(The problem is that if $USER is root, then the authentication will log
in with the mysqld user root. And then CURRENT_USER() returns a valid
user, giving .result file difference).

MDEV-4514 After increasing user name length mysql.db is reported broken and event scheduler does not start

because --log-bin sets opt_bin_logname to ""
(same for any OPT_ARG GET_STR (or GET_STR_ALLOC) option)

to match distribution packages better:
  remove "mysql" from server.rpm Provides, add it to the shared.rpm Provides.
  fake provides that "mysql" and "mysql-libs" packages would've had.

cleanup:
  remove auto-generated provides from the manual provides list.

Fixed MDEV-4291: Assertion `trid >= info->s->state.create_trid' failure or data corruption (key points to record
outside datafile) on INSERT into an Aria table.

The isssue was that the check if a table was moved between systems didn't take into account that create_trid could be bigger than the current max trid on the new system.
This could only happen if one tried to move a table that one had just done a 'REPAIR TABLE' on.
Tables that one had run 'aria_chk --zerofill' on worked.

Fixed this by assuming that if create_trid is too big then the table has been moved from one system to another and we have to do an automatic zerofill.

Other fixed:

- Added a check to detect a wrong create_trid in 'check table'.
- aria_chk -dvv will now write out also the create_trid (to make future error finding easier)
- aria_chk --zerofill doesn't anymore require a aria_control_file
- Removed some warnings from safemalloc when using aria_chk, ma_test1 and ma_test2.


include/myisamchk.h:
  Removed wrong 'QQ' flags (the flags are used by myisamchk and aria_chk)
storage/maria/ha_maria.cc:
  maria_chk_status() can now also return an error.
storage/maria/ma_check.c:
  In maria_chk_status() check if create_trid value is too big.
storage/maria/ma_open.c:
  Changed check if table is moved so that we can detect wrong create_trid values.
  Don't set STATE_NOT_MOVABLE flag if we are doing repair/check. This was done so that aria_chk can print out the movable flag.
storage/maria/ma_test1.c:
  Added code to suppress memory leaks from safemalloc
storage/maria/ma_test2.c:
  Added code to suppress memory leaks from safemalloc
storage/maria/maria_chk.c:
  Added code to suppress memory leaks from safemalloc.
  Make help text a bit better for --HELP and --zerofill.
  Incresed version number.
  Don't require a control file if we are only doing --zerofill
  Print out 'create_trid' when doing --describe --verbose
storage/maria/unittest/ma_test_recovery.expected:
  Updated result file

MDEV-3999: Valgrind errors 'invalid write' or assorted server crashes on concurrent flow with partitioned Aria tables
MDEV-3989: Server crashes on import from MariaDB mysqldump export with partitioned Aria table.

Problem was that bulk insert in aria was not properly protected against concurrent selects.


storage/maria/ha_maria.cc:
  Move settings of file->state to _ma_block_start_trans() to ensure that lock_key_trees is not changed by a concurrent bulk_insert.
storage/maria/ma_check.c:
  Added DBUG_ASSERT()
storage/maria/ma_open.c:
  Set start_trans to ma_start_trans for default behaviour.
storage/maria/ma_pagecrc.c:
  Removed test for 'non_transactional' as a now_transactinal could be reset while a flush was happening.
storage/maria/ma_state.c:
  Moved setting of info->state from external_lock to start_trans to protect against concurrent running bulk inserts.
  This works as the other threads will wait in thr_lock() until bulk_insert is done and keys are re-generated.
storage/maria/ma_state.h:
  Added _ma_start_trans()

Fixed that SHOW PROCESSLIST and information_schema.processlist uses the right length for user names.
Fixed some failing tests


mysql-test/mysql-test-run.pl:
  Removed warning from mysql-test-run
mysql-test/r/create.result:
  Updated result
mysql-test/r/log_slow.result:
  Fixed failing test
mysql-test/suite/funcs_1/r/is_columns_is.result:
  Updated result
mysql-test/suite/funcs_1/r/processlist_priv_no_prot.result:
  Updated result
mysql-test/suite/funcs_1/r/processlist_val_no_prot.result:
  Updated result
mysql-test/t/log_slow.test:
  Ensure variables are properly reset at end of test
sql/sql_show.cc:
  Fixed max length for user names

MDEV-4280: Assertion `empty_size == empty_size_on_page' failure in ma_blockrec.c or ER_NOT_KEYFILE on query with DISTINCT and GROUP BY
This could happen when using Aria for internal temporary files (default case) and using DISTINCT.
_ma_scan_restore_block_record() didn't work correctly if there was rows inserted, updated or deleted on the handler
between calls to _ma_scan_remember_block_record() and _ma_scan_restore_block_record().
The effect was that some DISTINCT queries that used remove_dup_with_compare() could fail.

.bzrignore:
  Ignore sql_yacc.hh
mysql-test/suite/maria/r/distinct.result:
  Test case for MDEV-4280
mysql-test/suite/maria/t/distinct.test:
  Test case for MDEV-4280
mysql-test/t/mysql.test:
  Fixed test suite (we could get error -1 in some cases)
sql/sql_select.cc:
  Break loop if restart_rnd_next() gives an error
storage/maria/ha_maria.cc:
  scan_restore_pos() can return disk fault error.
storage/maria/ma_blockrec.c:
  _ma_scan_remember_block_record() did incorrectly update scan.dir instead of scan_save.dir .
  _ma_scan_restore_block_record() didn't work correctly if there was rows inserted,updated or deleted on the handler
  between calls to _ma_scan_remember_block_record() and _ma_scan_restore_block_record().
  Fixed by adding counters for row changes and reading the current scan page if changes had been made.
storage/maria/ma_blockrec.h:
  scan_restore_pos() can return disk fault error.
storage/maria/ma_delete.c:
  Increment row_changes
storage/maria/ma_scan.c:
  scan_restore_pos() can return disk fault error.
storage/maria/ma_update.c:
  Increment row_changes
storage/maria/ma_write.c:
  Increment row_changes
storage/maria/maria_def.h:
  scan_restore_pos() can return disk fault error.

Added comment to clearify the code.


storage/maria/ma_blockrec.c:
  Added comment to clearify the code
  In case of out of memory or disk error, mark pages with LSN_IMPOSSIBLE to make it easier to know which pages have wrong information.

- Use lc-messages-dir instead of deprecated --language when running mysqld in bootstrap mode.
- Add some verbosity to mysql_install_db.exe when it runs in course of MSI installation.

avoid divison by zero

MDEV-4489 "Replication of big5, cp932, gbk, sjis strings makes wrong values on slave"
has been fixed.

Problem:
String constants of some Asian charsets (big5,cp932,gbk,sjis)
can have backslash '\' (0x5C) in the second byte of multi-byte characters.
Replicating of such constants using the standard '\'-escaping is dangerous.
Therefore, constants of these charsets are replicated using hex notation:
INSERT INTO t1 (a) VALUES (0x815C);

However, 0xHHHH constants do not work well in some cases,
because they can behave as strings and as numbers, depending on context
(for example, depending on the data type of the column in an INSERT statement).

This SQL script was not replicated correctly with statement-based replication:

SET NAMES gbk;
PREPARE STMT FROM 'INSERT INTO t1 (a) VALUES (?)';
SET @A = '1';
EXECUTE STMT USING @A;

The INSERT statement was replicated as:
INSERT INTO t1 (a) VALUES (0x31);

'1' was correctly converted to the number 1 on master.
But the 0x31 constant was treated as number 49 on slave.

Fix:

1. Binary log now uses X'HHHH' instead of 0xHHHH constants.
2. The X'HHHH' constants now work always as strings, in all contexts.
This is the SQL standard compliant behaviour.

After the fix, the above statement is replicated as:
INSERT INTO t1 (a) VALUES (X'31');
X'31' is treated as string '1' on slave, and is correctly converted to 1.


modified:
  @ mysql-test/r/ctype_cp932_binlog_stm.result
  @ mysql-test/r/select.result
  @ mysql-test/r/select_jcl6.result
  @ mysql-test/r/select_pkeycache.result
  @ mysql-test/r/user_var-binlog.result
  @ mysql-test/r/varbinary.result
  @ mysql-test/suite/binlog/r/binlog_stm_ctype_ucs.result
  @ mysql-test/suite/binlog/r/binlog_stm_mix_innodb_myisam.result
  @ mysql-test/suite/rpl/r/rpl_charset_sjis.result
  @ mysql-test/suite/rpl/r/rpl_mdev382.result
  @ mysql-test/suite/rpl/t/rpl_charset_sjis.test
  @ mysql-test/t/ctype_cp932_binlog_stm.test
  @ mysql-test/t/select.test
  @ mysql-test/t/varbinary.test
    Adding and updating tests

  @ sql/item.cc
  @ sql/item.h
  @ sql/sql_yacc.yy
  @ sql/sql_lex.cc
    Splitting the implementations of X'HH' and 0xHH constants into two
    separate classes. Fixing the parser to distinguish the two syntaxes.

  @ sql/log_event.cc
    Using X'HH' instead of 0xHH for binary logging for string constants
    of the "dangerous" charsets.

  @ sql/sql_string.h
    Adding a helped method String::append_hex().