bzr commit into mysql-6.0-backup branch (charles.bell:2768) Bug#39780

[Chuck Bell]

#At file:///C:/source/bzr/mysql-6.0-bug-39780/ based on revid:charles.bell@stripped

 2768 Chuck Bell	2009-02-11
      BUG#39780 Allow restore to skip gap event during restore on master 
      
      This patch adds a new option to the restore command: skip_gap_event.
      It is used to skip writing the incident event when a restore is
      run on a master in an active replication topology (gap event).

per-file messages:
  mysql-test/suite/rpl/r/rpl_backup.result
    Corrected result file.
  mysql-test/suite/rpl/t/rpl_backup.test
    Added test case for skipping gap event.
  sql/backup/backup_kernel.h
    Added parameter to pass on value of skip_gap_event check.
  sql/backup/kernel.cc
    Added parameter to pass on the result of the skip_gap_event check.
    Added code to skip gap event when triggered.
  sql/lex.h
    Added new symbol.
  sql/sql_parse.cc
    Added code to pass the skip_gap_event signal to the proper locations.
    Simplified option check code.
  sql/sql_yacc.yy
    Extended restore syntax to include new option.