fix for BUG#7947 - failure to log DO RELEASE_LOCK() if we disconnect in the middle of

transaction while holding the lock. Also test to make sure other binlogging issues
reported in the bug have been addressed.

mysql-test/r/rpl_bug7947.result

+stop slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+reset master;
+reset slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+start slave;
+begin;
+create temporary table ti (a int) engine=innodb;
+rollback;
+Warnings:
+Warning	1196	Some non-transactional changed tables couldn't be rolled back
+insert into ti values(1);
+set autocommit=0;
+create temporary table t1 (a int) type=myisam;
+Warnings:
+Warning	1287	'TYPE=storage_engine' is deprecated; use 'ENGINE=storage_engine' instead
+commit;
+insert t1 values (1);
+rollback;
+create table t0 (n int);
+insert t0 select * from t1;
+set autocommit=1;
+insert into t0 select GET_LOCK("lock1",null);
+set autocommit=0;
+create table t2 (n int) engine=innodb;
+insert into t2 values (3);
+select get_lock("lock1",null);
+get_lock("lock1",null)
+1
+show binlog events from 79;
+Log_name	Pos	Event_type	Server_id	Orig_log_pos	Info
+master-bin.000001	79	Query	1	79	use `test`; BEGIN
+master-bin.000001	119	Query	1	79	use `test`; create temporary table ti (a int) engine=innodb
+master-bin.000001	201	Query	1	201	use `test`; ROLLBACK
+master-bin.000001	244	Query	1	244	use `test`; insert into ti values(1)
+master-bin.000001	303	Query	1	303	use `test`; BEGIN
+master-bin.000001	343	Query	1	303	use `test`; create temporary table t1 (a int) type=myisam
+master-bin.000001	423	Query	1	423	use `test`; COMMIT
+master-bin.000001	464	Query	1	464	use `test`; create table t0 (n int)
+master-bin.000001	522	Query	1	522	use `test`; insert t0 select * from t1
+master-bin.000001	583	Query	1	583	use `test`; insert into t0 select GET_LOCK("lock1",null)
+master-bin.000001	662	Query	1	662	use `test`; create table t2 (n int) engine=innodb
+master-bin.000001	734	Query	1	734	use `test`; DROP /*!40005 TEMPORARY */ TABLE IF EXISTS `test`.`t1`,`test`.`ti`
+master-bin.000001	835	Query	1	835	use `test`; DO RELEASE_LOCK("lock1")
+select release_lock("lock1");
+release_lock("lock1")
+1
+drop table t0,t2;

mysql-test/t/rpl_bug7947.test

+--source include/master-slave.inc
+connection master;
+begin;
+create temporary table ti (a int) engine=innodb;
+rollback;
+insert into ti values(1);
+set autocommit=0;
+create temporary table t1 (a int) type=myisam; commit;
+insert t1 values (1); rollback;
+create table t0 (n int);
+insert t0 select * from t1;
+set autocommit=1;
+insert into t0 select GET_LOCK("lock1",null);
+set autocommit=0;
+create table t2 (n int) engine=innodb;
+insert into t2 values (3); 
+disconnect master;
+connect (master,localhost,root,,test,$MASTER_MYPORT,master.sock);
+select get_lock("lock1",null);
+show binlog events from 79;
+select release_lock("lock1");
+drop table t0,t2;

sql/item_func.cc

@@ -1975,7 +1975,7 @@ void item_user_lock_release(User_level_lock *ull)
     tmp.copy(command, strlen(command), tmp.charset());
     tmp.append(ull->key,ull->key_length);
     tmp.append("\")", 2);
-    Query_log_event qev(current_thd, tmp.ptr(), tmp.length(),1, FALSE);
+    Query_log_event qev(current_thd, tmp.ptr(), tmp.length(),0, FALSE);
     qev.error_code=0; // this query is always safe to run on slave
     mysql_bin_log.write(&qev);
   }