1. factored XID-related functions to a separate wsrep_xid.cc unit.
  2. refactored them to take refrences instead of pointers where appropriate
  3. implemented wsrep_get/set_SE_position to take wsrep_uuid_t and wsrep_seqno_t instead of XID
  4. call wsrep_set_SE_position() in wsrep_sst_received() to reinitialize SE checkpoint after SST was received, avoid assert() in setting code by first checking current position.

The following FLUSH commands are now executed under total
order isolation:
* FLUSH DES_KEY_FILE
* FLUSH HOSTS
* FLUSH PRIVILEGES
* FLUSH QUERY CACHE
* FLUSH STATUS
* FLUSH USER_RESOURCES

refs codership/mysql-wsrep#53 - fencing LOAD DATA splitting related commit to not happen with ALTER processing

Refs #25 - made sure signals that may be set to ignored in mysqld were set to default in the child process.

Going more MTR-friendly - for SST prefer to use mysql client, mysqldump and my_print_defaults from the local build tree.

refs #7 - merged fix from 5.5 branch. However, 5.6 branch has not (yet) surfaced similar applier hang as 5.5

Avoid creating innodb buffer pool dump/load thread if mysqld is started
with wsrep recovery mode (--wsrep-recover).

(Merged fix for lp:1305955 from lp:percona-xtradb-cluster)

THD's lex->definer initially holds "*current_user" for CURRENT_USER().
As a result when wsrep tries to create the trigger query, it incorrectly
uses "*current_user". Fixed by calling get_current_user() to get the
real current user.

Merged galera_create_trigger.test from github.com/codership/mysql-wsrep.

Restore fix for MDEV-4328 (revno: 3391) that got accidentally
overwritten while merging :
http://bazaar.launchpad.net/~codership/codership-mysql/5.5-23/revision/3900

Added a test case.

wsrep threads should be always be checked for existence & stopped on
server shutdown.

Conflicts:
	mysql-test/suite/galera/r/rpl_row_annotate.result
	sql/rpl_rli.cc
	sql/slave.cc
	sql/wsrep_applier.cc
	sql/wsrep_thd.cc

Conflicts:
	storage/innobase/dict/dict0dict.c
	storage/xtradb/dict/dict0dict.c

Analysis: after a red-black-tree lookup we use node withouth
checking did lookup succeed or not. This lead to situation
where NULL-pointer was used.

Fix: Add additional check that found node from red-back-tree
is valid.

Conflicts:
	BUILD/compile-pentium-debug-wsrep
	BUILD/compile-pentium-wsrep
	BUILD/compile-pentium64-wsrep
	CMakeLists.txt
	client/mysqlcheck.c
	cmake/cpack_rpm.cmake
	cmake/install_macros.cmake
	cmake/os/FreeBSD.cmake
	cmake/plugin.cmake
	cmake/wsrep.cmake
	debian/dist/Debian/control
	debian/dist/Debian/mariadb-galera-server-10.0.README.Debian
	debian/dist/Debian/mariadb-galera-server-10.0.postrm
	debian/dist/Debian/mariadb-galera-server-5.5.README.Debian
	debian/dist/Debian/mariadb-galera-server-5.5.dirs
	debian/dist/Debian/mariadb-galera-server-5.5.files.in
	debian/dist/Debian/mariadb-galera-server-5.5.postinst
	debian/dist/Debian/mariadb-galera-server-5.5.postrm
	debian/dist/Debian/mariadb-server-5.5.README.Debian
	debian/dist/Debian/mariadb-server-5.5.postrm
	debian/dist/Debian/rules
	debian/dist/Ubuntu/control
	debian/dist/Ubuntu/mariadb-galera-server-10.0.README.Debian
	debian/dist/Ubuntu/mariadb-galera-server-10.0.postrm
	debian/dist/Ubuntu/mariadb-galera-server-5.5.README.Debian
	debian/dist/Ubuntu/mariadb-galera-server-5.5.dirs
	debian/dist/Ubuntu/mariadb-galera-server-5.5.files.in
	debian/dist/Ubuntu/mariadb-galera-server-5.5.postinst
	debian/dist/Ubuntu/mariadb-galera-server-5.5.postrm
	debian/dist/Ubuntu/mariadb-galera-server-5.5.py
	debian/dist/Ubuntu/mariadb-server-5.5.README.Debian
	debian/dist/Ubuntu/mariadb-server-5.5.postrm
	debian/dist/Ubuntu/rules
	debian/mariadb-galera-server-10.0.NEWS
	debian/mariadb-galera-server-10.0.config
	debian/mariadb-galera-server-10.0.logcheck.ignore.paranoid
	debian/mariadb-galera-server-10.0.logcheck.ignore.server
	debian/mariadb-galera-server-10.0.logcheck.ignore.workstation
	debian/mariadb-galera-server-10.0.mysql-server.logrotate
	debian/mariadb-galera-server-10.0.prerm
	debian/mariadb-galera-server-5.5.NEWS
	debian/mariadb-galera-server-5.5.config
	debian/mariadb-galera-server-5.5.logcheck.ignore.paranoid
	debian/mariadb-galera-server-5.5.logcheck.ignore.server
	debian/mariadb-galera-server-5.5.logcheck.ignore.workstation
	debian/mariadb-galera-server-5.5.mysql-server.logrotate
	debian/mariadb-galera-server-5.5.mysql.init
	debian/mariadb-galera-server-5.5.preinst
	debian/mariadb-galera-server-5.5.prerm
	debian/mariadb-galera-server-5.5.templates
	debian/mariadb-galera-test-10.0.links
	debian/mariadb-galera-test-5.5.dirs
	debian/mariadb-galera-test-5.5.files
	debian/mariadb-galera-test-5.5.links
	debian/mariadb-server-5.5.NEWS
	debian/mariadb-server-5.5.config
	debian/mariadb-server-5.5.logcheck.ignore.paranoid
	debian/mariadb-server-5.5.logcheck.ignore.server
	debian/mariadb-server-5.5.logcheck.ignore.workstation
	debian/mariadb-server-5.5.mysql-server.logrotate
	debian/mariadb-server-5.5.prerm
	debian/mariadb-test-5.5.links
	debian/po/POTFILES.in
	debian/po/ar.po
	debian/po/ca.po
	debian/po/cs.po
	debian/po/da.po
	debian/po/de.po
	debian/po/es.po
	debian/po/eu.po
	debian/po/fr.po
	debian/po/gl.po
	debian/po/it.po
	debian/po/ja.po
	debian/po/nb.po
	debian/po/nl.po
	debian/po/pt.po
	debian/po/pt_BR.po
	debian/po/ro.po
	debian/po/ru.po
	debian/po/sv.po
	debian/po/templates.pot
	debian/po/tr.po
	mysql-test/extra/binlog_tests/binlog.test
	mysql-test/include/mtr_check.sql
	mysql-test/r/innodb_load_xa_with_wsrep.result
	mysql-test/r/mysqld--help.result
	mysql-test/suite/binlog/r/binlog_row_binlog.result
	mysql-test/suite/binlog/r/binlog_stm_binlog.result
	mysql-test/suite/galera/galera_2nodes.cnf
	mysql-test/suite/galera/r/create.result
	mysql-test/suite/galera/t/create.test
	mysql-test/suite/perfschema/r/all_instances.result
	mysql-test/suite/perfschema/r/dml_setup_instruments.result
	mysql-test/suite/wsrep/r/variables.result
	mysql-test/suite/wsrep/t/variables.test
	mysql-test/t/mysqld--help.test
	mysys/default.c
	mysys/thr_lock.c
	scripts/CMakeLists.txt
	scripts/mysqld_safe.sh
	scripts/wsrep_sst_common.sh
	scripts/wsrep_sst_mysqldump.sh
	scripts/wsrep_sst_rsync.sh
	scripts/wsrep_sst_xtrabackup-v2.sh
	sql/event_data_objects.cc
	sql/events.cc
	sql/ha_partition.h
	sql/handler.cc
	sql/handler.h
	sql/lock.cc
	sql/log.cc
	sql/log.h
	sql/log_event.cc
	sql/mdl.cc
	sql/mysqld.cc
	sql/mysqld.h
	sql/rpl_record.cc
	sql/slave.cc
	sql/sp.cc
	sql/sql_acl.cc
	sql/sql_admin.cc
	sql/sql_alter.cc
	sql/sql_base.cc
	sql/sql_class.cc
	sql/sql_class.h
	sql/sql_connect.cc
	sql/sql_insert.cc
	sql/sql_parse.cc
	sql/sql_partition_admin.cc
	sql/sql_prepare.cc
	sql/sql_repl.cc
	sql/sql_show.cc
	sql/sql_table.cc
	sql/sql_trigger.cc
	sql/sys_vars.cc
	sql/transaction.cc
	sql/wsrep_applier.cc
	sql/wsrep_binlog.cc
	sql/wsrep_binlog.h
	sql/wsrep_hton.cc
	sql/wsrep_mysqld.cc
	sql/wsrep_mysqld.h
	sql/wsrep_priv.h
	sql/wsrep_sst.cc
	sql/wsrep_sst.h
	sql/wsrep_thd.cc
	sql/wsrep_thd.h
	sql/wsrep_utils.cc
	sql/wsrep_var.cc
	storage/innobase/dict/dict0dict.c
	storage/innobase/fil/fil0fil.c
	storage/innobase/handler/ha_innodb.cc
	storage/innobase/handler/ha_innodb.h
	storage/innobase/handler/handler0alter.cc
	storage/innobase/include/lock0lock.h
	storage/innobase/include/srv0srv.h
	storage/innobase/include/trx0sys.h
	storage/innobase/include/trx0trx.h
	storage/innobase/lock/lock0lock.c
	storage/innobase/os/os0file.c
	storage/innobase/rem/rem0rec.c
	storage/innobase/row/row0ins.c
	storage/innobase/row/row0upd.c
	storage/innobase/srv/srv0srv.c
	storage/innobase/trx/trx0roll.c
	storage/innobase/trx/trx0sys.c
	storage/innobase/trx/trx0trx.c
	storage/innobase/ut/ut0ut.c
	storage/tokudb/CMakeLists.txt
	storage/xtradb/buf/buf0buf.c
	storage/xtradb/dict/dict0dict.c
	storage/xtradb/handler/ha_innodb.cc
	storage/xtradb/handler/ha_innodb.h
	storage/xtradb/handler/handler0alter.cc
	storage/xtradb/include/lock0lock.h
	storage/xtradb/include/srv0srv.h
	storage/xtradb/include/trx0sys.h
	storage/xtradb/lock/lock0lock.c
	storage/xtradb/os/os0file.c
	storage/xtradb/os/os0proc.c
	storage/xtradb/rem/rem0rec.c
	storage/xtradb/row/row0ins.c
	storage/xtradb/row/row0upd.c
	storage/xtradb/srv/srv0srv.c
	storage/xtradb/srv/srv0start.c
	storage/xtradb/trx/trx0roll.c
	storage/xtradb/trx/trx0sys.c
	storage/xtradb/trx/trx0trx.c
	support-files/mysql.server.sh
	support-files/mysql.spec.sh
	wsrep/CMakeLists.txt

Enable execution of CREATE TABLE SELECT in total order isolation. Added
a test case.

Contributed by : Andrew W Elble

OPTION_SKIP_REPLICATION flag needs to be preserved for events received
on non-originating nodes.

log-tc-size is 24K by default. Page size is 64K on PPC64. But log-tc-
size
must be at least 3 x page size. This is enforced by TC_LOG_MMAP::open()
with a comment: to guarantee non-empty pool.

This all makes server not startable in default configuration on PPC64.

Autosize log-tc-size, so that it's min value= page size * 3, default
value= page size * 6, block size= page size.

Conflicts:
	mysql-test/suite/sys_vars/inc/sysvars_server.inc
	mysql-test/suite/sys_vars/r/sysvars_server_notembedded.result
	mysql-test/t/mysqld--help.test
	sql/mysqld.cc
	sql/sys_vars.cc

Annotate_rows event needs to be preserved until the last Rows event has
been applied because after it has been applied thd->query points to the
query stored inside this event.

Added an include file to check galera library version.

* Changed loopback detection to be done via ifa->ifa_flags
* Removed unused function wsrep_guess_address()

Conflicts:
	storage/innobase/include/trx0trx.h

Add a testcase. The bug itself was fixed by the fix for MDEV-7316.

* Changed loopback detection to be done via ifa->ifa_flags
* Removed unused function wsrep_guess_address()