Fixed so that character set constants are encoded as hex strings in frm file, but as utf8 strings in the same manner as default values in show create table and information schema tables

BUG#48397, set key_part->length to key_part->store_length isn't correct, store_length is a bit longer

Fixed code review change to ensure that VALUES constants are of the same result type as the field they are constants for

BUG#48165, needed to introduce length restrictions on partitioning fields to ensure that no stack overruns occur

Fixed sql_mode issue in BUG#48164, will ignore sql_mode when generating constants, also warnings will not be tolerated

Fixing locale name: en_US.UTF-8 -> en_US.utf8

Disabled rpl_cross_version (instead of setting it experimental).
Fixed outstanding warning fix in main.debug_sync.

result files.

Warnings affected:
 - WARN_NON_ASCII_SEPARATOR_NOT_IMPLEMENTED
 - ER_TOO_LONG_FIELD_COMMENT

Don't do character set autodetection when running
mysql from mysql_fix_privilege_tables.

Fixed problems:
- "mtr --mem mysql_locale_posix" could fail because of wrong temporary
  directory name: var/tmp/ -> $MYSQLTEST_VARDIR/tmp/
- "mtr federated_debug" could fail because of not compiled-in
   locale character set.  Always run mysqladmin with latin1.

plugin/semisync/CMakeLists.txt:
  Add CMakeLists.txt for semisync

CMakeLists.txt:
  Add plugin/semisync subdirectory
mysql-test/mysql-test-run.pl:
  Check for semisync dll for Windows
mysql-test/suite/rpl/r/rpl_semi_sync.result:
  Update result file
mysql-test/suite/rpl/t/rpl_semi_sync.test:
  Test semi-sync on Windows
plugin/semisync/semisync_master.cc:
  Define gettimeofday for Windows

rpl.rpl_heartbeat_basic and rpl.rpl_cross_version set as experimental.

Conflicts
=========

Text conflict in .bzr-mysql/default.conf
Text conflict in libmysqld/CMakeLists.txt
Text conflict in libmysqld/Makefile.am
Text conflict in mysql-test/collections/default.experimental
Text conflict in mysql-test/extra/rpl_tests/rpl_row_sp006.test
Text conflict in mysql-test/suite/binlog/r/binlog_tmp_table.result
Text conflict in mysql-test/suite/rpl/r/rpl_loaddata.result
Text conflict in mysql-test/suite/rpl/r/rpl_loaddata_fatal.result
Text conflict in mysql-test/suite/rpl/r/rpl_row_create_table.result
Text conflict in mysql-test/suite/rpl/r/rpl_row_sp006_InnoDB.result
Text conflict in mysql-test/suite/rpl/r/rpl_stm_log.result
Text conflict in mysql-test/suite/rpl_ndb/r/rpl_ndb_circular_simplex.result
Text conflict in mysql-test/suite/rpl_ndb/r/rpl_ndb_sp006.result
Text conflict in mysql-test/t/mysqlbinlog.test
Text conflict in sql/CMakeLists.txt
Text conflict in sql/Makefile.am
Text conflict in sql/log_event_old.cc
Text conflict in sql/rpl_rli.cc
Text conflict in sql/slave.cc
Text conflict in sql/sql_binlog.cc
Text conflict in sql/sql_lex.h
21 conflicts encountered.

NOTE
====
 mysql-5.1-rpl-merge has been made a mirror of mysql-next-mr:
 - "mysql-5.1-rpl-merge$ bzr pull ../mysql-next-mr"

 This is the first cset (merge/...) committed after pulling 
 from mysql-next-mr.

BUG#46183, added character set identifier on character constants in VALUES part for column list partitioned tables to ensure constants are handled properly according to character sets