Added waiting start/stop slave via primitives.

Fix for binlog_index test case: hide difference for paths from warning messages between Windows and Unix 

into  mysql.com:/home/ksm/mysql/bugs/commit-mysql-5.1-new-rpl-bug28772

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-rpl

into  pilot.mysql.com:/data/msvensson/mysql/mysql-5.1-mtr

into  mysql.com:/home/ksm/mysql/bugs/commit-mysql-5.1-new-rpl-bug30128

- avoid restart
- keep all in one file
- fix --check-testcase

Bug#28772, added waiting Until_Log_Pos when slave starting with UNTIL clause and then waiting stop of slave. 
It helps to avoid issues when slave starts too slowly.

Bug#30128, The reason that sometimes events were executed because without STARTS clause server fires immediately after creating event and
time between create and delete event sometimes is enough for firing. So adding STARTS clause moves first execution in future after drop of event.

into  dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge

Problem: a typo in the code. When autocommit, foreign_key_checks,
sql_auto_is_null, or unique_checks changes, it prints "SET", and then a
comma-separated list of assignments. However, it does not print the
assignment to the @@autocommit variable.
Fix: print the @@autocommit variable.

into  dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge

into  dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge

into  dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge

into  dl145h.mysql.com:/data0/mkindahl/mysql-5.0-rpl-merge

into  dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge

into  magare.gmz:/home/kgeorge/mysql/work/merge-build-5.1-bugteam

into  mats-laptop.(none):/home/bk/b29020-mysql-5.1-rpl

tables is not zero any more. For row-based logging, there is an extra commit
for sending rows changed by the statement to the binary log.

into  magare.gmz:/home/kgeorge/mysql/work/merge-build-5.1-bugteam

into  dl145h.mysql.com:/data0/mkindahl/mysql-5.1-rpl-merge

into  dl145h.mysql.com:/data0/mkindahl/mysql-5.0-rpl-merge

into  magare.gmz:/home/kgeorge/mysql/work/merge-build-5.1-bugteam

into  magare.gmz:/home/kgeorge/mysql/work/merge-build-5.1-bugteam

into  amd64.(none):/src/bug26243/my51-bug26243

into  mysql1000.(none):/home/andrei/MySQL/MERGE/5.1-main2rpl