Merge tsmith@bk-internal.mysql.com:/home/bk/mysql-5.1-build

into  ramayana.hindu.god:/home/tsmith/m/bk/build/51

mysql-test/r/group_concat_max_len_func.result

@@ -76,4 +76,4 @@ id	rollno	group_concat(name)
 ## Dropping table t1 ##
 DROP table t1;
 ## Disconnecting both the connection ##
-SET @@group_concat_max_len = @save;
+SET @@global.group_concat_max_len = @save;

mysql-test/t/disabled.def

@@ -16,6 +16,7 @@ ps_ddl               : Bug#12093 2007-12-14 pending WL#4165 / WL#4166
 csv_alter_table      : Bug#33696 2008-01-21 pcrews no .result file - bug allows NULL columns in CSV tables
 event_scheduler_basic: BUG#35997 server seems to crash.
 event_scheduler_func: BUG#35997 server seems to crash.
-thread_cache_size_func: BUG#35988 Due to not deterministic results
 query_cache_wlock_invalidate_func: Bug#35390 causes not deterministic results.
+thread_cache_size_func: BUG#35988 Due to not deterministic results
+user_limits     : Bug#23921 random failure of user_limits.test
 

mysql-test/t/group_concat_max_len_func.test

@@ -127,5 +127,5 @@ DISCONNECT test_con1;
 
 connection default;
 
-SET @@group_concat_max_len = @save;
+SET @@global.group_concat_max_len = @save;