and the server suddenly goes away

1. fix broken change user handling (no restart should happen in the normal case)
2. add assert to guarantee that we never send a request to change to the same plugin
3. "fix" plugin string as sent by the client to be able to compare native plugins by pointers
4. more complete MYSQL initialization in the embedded case
5. change_user.test updated to handle -with-embedded-privilege-control builds

Add a -nobuild argument to the script. Useful for building the zip file release with Express Edition which doesn't have the devenv command

replication thread or when opening a table

to work when a table is partitioned

Cherry-pick fix for Bug#53371, security hole with bypassing grants using special path in db/table names.
Bump MariaDB version for security fix release.

parse_engine_table_options() was only called when there was at least option with a
non-default value. otherwise it was not called and option structure was not
allocated at all. NULL pointer dereference in ::open().

alter table does not reset HA_OPTION_TEXT_CREATE_OPTIONS when the last option value is removed

  consistency: don't use "index" and "key" interchangeably
  => rename "key" to "index"
  consistency: all option types are logical, besides ULL
  => rename ULL to NUMBER
  don't accept floats where integers are expected
  accept hexadecimal where integers are expected

Fix missing bounds check in string conversion.
Bump version number for security fix release.

Bump version number for security fix release.

sql/sql_base.cc:
  Replace strmov() with strnmov() to remove the possibility for buffer overflow.
sql/sql_parse.cc:
  Reject COM_FIELD_LIST with too-big table or wildcard argument.
  (libmysqlclient doesn't allow sending too long arguments anyway, but we
  need this to protect against buffer overflow exploits).

Set the correct engine flags for OQGraph to get binlogging working.

update test results
fix compilation failure on windows
fix for ps-protocol

mysql-test/r/plugin.result:
  make sure the PS handle is closed
mysql-test/t/plugin.test:
  make sure the PS handle is closed
sql/mysqld.cc:
  compilation failure: lable without a statement.
sql/sql_plugin.cc:
  make plugin lock and plugin unlock use the same format of the dbug info string.
  print the ref_count *after* the lock and *after* the unlock.

(fgets, unlike gets, does not strip \n)