added system command
myisammrg/myrg_open.c
fixed coredump when opening an empty union table
sql/sql_repl.cc
fixed warnings, remove confusing comment, fixed coredump in
change master to when master.info was corrupted
added new replication test case
client/mysqltest.c:
added system command
myisammrg/myrg_open.c:
fixed coredump when opening an empty union table
sql/sql_repl.cc:
fixed warnings, remove confusing comment, fixed coredump in
change master to when master.info was corrupted
