Fixes for failures in test scripts and removal of some compiler warnings

- rpl_gtid_stop_start:  Random failure
- sysvars_innodb,32bit: Fixes for 32 bit

mysql-test/suite/rpl/r/rpl_gtid_stop_start.result

@@ -8,6 +8,7 @@ include/stop_slave.inc
 Master_Log_File = 'master-bin.000001'
 Using_Gtid = 'No'
 CHANGE MASTER TO master_use_gtid=current_pos;
+FLUSH LOGS;
 connection server_1;
 FLUSH LOGS;
 include/wait_for_purge.inc "master-bin.000002"

mysql-test/suite/rpl/t/rpl_gtid_stop_start.test

@@ -28,6 +28,7 @@ CHANGE MASTER TO master_use_gtid=current_pos;
 --write_file $MYSQLTEST_VARDIR/tmp/mysqld.2.expect
 wait
 EOF
+FLUSH LOGS;
 --shutdown_server 30
 --source include/wait_until_disconnected.inc
 

sql/table.cc

@@ -2410,8 +2410,9 @@ int TABLE_SHARE::init_from_binary_frm_image(THD *thd, bool write,
       }
     }
   }
-  DBUG_ASSERT((table_check_constraints - share->check_constraints) ==
-              share->table_check_constraints - share->field_check_constraints);
+  DBUG_ASSERT((uint) (table_check_constraints - share->check_constraints) ==
+              (uint) (share->table_check_constraints -
+                      share->field_check_constraints));
 
   if (options)
   {

storage/innobase/lock/lock0lock.cc

@@ -4790,7 +4790,7 @@ lock_table(
 	lock_mutex_enter();
 
 	DBUG_EXECUTE_IF("fatal-semaphore-timeout",
-		{ os_thread_sleep(3600000000); });
+		{ os_thread_sleep(3600000000LL); });
 
 	/* We have to check if the new lock is compatible with any locks
 	other transactions have in the table lock queue. */