Disable test cases due to Bug 55966.

mysql-test/suite/rpl/t/disabled.def

@@ -10,7 +10,8 @@
 #
 ##############################################################################
 
-rpl_row_create_table : Bug#51574 Feb 27 2010 andrei failed different way than earlier with bug#45576
-rpl_spec_variables		: BUG#47661 2009-10-27 jasonh rpl_spec_variables fails on PB2 hpux
-rpl_failed_optimize        : WL#4284: Can't optimize table used by a pending transaction (there is metadata lock on the table).
-rpl_read_only              : WL#4284: Setting Read only won't succeed until all metadata locks are released.
+rpl_failed_optimize       : WL#4284: Can't optimize table used by a pending transaction (there is metadata lock on the table).
+rpl_plugin_load           : Bug#55966 2010-08-13 alik "plugin" tests fail in 5.5
+rpl_read_only             : WL#4284: Setting Read only won't succeed until all metadata locks are released.
+rpl_row_create_table      : Bug#51574 2010-02-27 andrei failed different way than earlier with bug#45576
+rpl_spec_variables        : BUG#47661 2009-10-27 jasonh rpl_spec_variables fails on PB2 hpux

mysql-test/t/disabled.def

@@ -14,5 +14,8 @@ lowercase_table3         : Bug#54845 2010-06-30 alik main.lowercase_table3 on Ma
 mysqlhotcopy_myisam      : bug#54129 2010-06-04 Horst
 mysqlhotcopy_archive     : bug#54129 2010-06-04 Horst
 partition_innodb_plugin  : Bug#53307 2010-04-30 VasilDimov valgrind warnings
+plugin                   : Bug#55966 2010-08-13 alik "plugin" tests fail in 5.5
+plugin_load              : Bug#55966 2010-08-13 alik "plugin" tests fail in 5.5
+plugin_not_embedded      : Bug#55966 2010-08-13 alik "plugin" tests fail in 5.5
 query_cache_28249        : Bug#43861 2009-03-25 main.query_cache_28249 fails sporadically
 sp_sync                  : Bug#48157 2010-02-06 5.5-m3 demands a differnt solution