mysql_upgrade overrode some of the custom changes made to system tables
in order to increase user name length. 
Make ALTER statements involving the affected columns take into account
length changes, as per https://mariadb.com/kb/en/create-user/#user-names

Avoid CPack complaints when a pdb file is missing for a static library
(patch from Vladislav Vaintroub)

MDEV-5955 Server crashes in handler::ha_external_lock or assertion `m_lock_type == 2' fails in handler::ha_close on disconnect with a locked temporary table

first unlock locked tables, then close and remove temporary

The reason was that a couple of variables that hold number of rows that was used to calculate buffers was uint and caused an overflow.

Fixed by changing variables that could hold number of rows from uint to ulong and also added a cast for this test.

include/heap.h:
  Reorder to get better alignment. Changed variables that could hold number of rows from uint to ulong
mysql-test/suite/heap/heap.result:
  Added test case
mysql-test/suite/heap/heap.test:
  Added test case
mysql-test/suite/plugins/t/server_audit.test:
  Added sleep as we want to have disconnect logged before we try a new connect
storage/heap/ha_heap.cc:
  Changed variables that could hold number of rows from uint to ulong
  Limit number of rows to 4G  (as most of the variables that holds rows are ulong anyway)
  reset records_changed when key_stat_version is changed to not cause increments for every row changed
storage/heap/ha_heap.h:
  changed records_changed to ulong as this can get big
storage/heap/hp_create.c:
  Changed variables that could hold number of rows from uint to ulong
  Added cast (fixed the original bug)
storage/heap/hp_delete.c:
  Changed variables that could hold number of rows from uint to ulong
storage/heap/hp_open.c:
  Removed not needed cast
storage/heap/hp_write.c:
  Changed variables that could hold number of rows from uint to ulong
support-files/compiler_warnings.supp:
  Removed extra : from supression

previous file->index_next (or other file->... index access method)
succeeded

in the libmysqlclient_16 version node.

add pthread_mutex_destroy(&THR_LOCK_dbug); that was apparently
forgotten since the very first MySQL version

error message (because error messages use replacements)

for new tables

checks that can skip the test

Allow "rpm -q --whatprovides mysql-server" to return more than one row.
(all rows should be identical though)

support-files/rpm/server-prein.sh:
  don't use "head -1" or "uniq" to avoid introducing new dependencies.
  "sed" is already used in this script.

MDEV-5783 Assertion `0' failed in make_sortkey(SORTPARAM*, uchar*, uchar*) on ORDER BY HEX( UNCOMPRESSED_LENGTH( pk ) )

MDEV-5773 symbol list_add, version libmysqlclient_18 not defined in file libmysqlclient.so.18 with link time reference
MDEV-5763 libmyodbc.so: undefined symbol: int2str
MDEV-5739 Symbol missing in libmysqlclient.so.18 (make_scrambled_password)

pam_mysql and especially myodbc need tons of internal symbols on Debian, argh!

Don't try to be smart about --socket.
Assume that if user has set up a non-standard location for a socket,
she did it consistently for both a server and clients
(otherwise most clients won't work anyway).

        The RTLD_DEFAULT value on Labrador machine is not NULL,
        so the dlsym() commands in the server_audit just fail
        to bind the necessary functions.
        Fixed by using RTLD_DEFAULT explicitly.

mysql-test/suite/rpl/t/rpl_000011-slave.opt:
  Renamed test case as it's slave that needs to restarted
support-files/compiler_warnings.supp:
  Fixed bad characters in suppression

mysql-test/suite/rpl/t/rpl_000011-master.opt:
  Added master.opt file to ensure that other tests don't interfere with rpl_000011
plugin/server_audit/server_audit.c:
  Fixed compiler error on solaris
support-files/compiler_warnings.supp:
  Ignore warning from xtradb

   Notifications about changed variables:
              server_audit_file_rotate_now
              server_audit_file_rotations
              server_audit_file_rotations
   are now handled and one doesn't need to stop/start logging to make them effective.

Reason for the bug was an optimization for higher connect speed where we moved when global status was updated,
but forgot to update states when slave thread dies.
Fixed by adding thd->add_status_to_global() before deleting slave thread's thd.


mysys/my_delete.c:
  Added missing newline
sql/mysqld.cc:
  Use add_status_to_global()
sql/slave.cc:
  Added missing add_status_to_global()
sql/sql_class.cc:
  Use add_status_to_global()
sql/sql_class.h:
  Simplify adding local status to global by adding add_status_to_global()

MDEV-5446: Assertion `!table || (!table->read_set || bitmap_is_set(table->read_set, field_index))' fails on EXPLAIN EXTENDED with VALUES function

field_index should be set correctly for null field created by Item_insert_value::fix_fields().

(as it's done in 10.0)