branches/zip: Exclude thd_binlog_filter_ok() when building

with older version of MySQL.

thd_binlog_filter_ok() is introduced in MySQL 5.1.41. But the
plugin can be built with MySQL prior to 5.1.41.

Approved by Heikki (on IM).

handler/ha_innodb.cc

@@ -7912,7 +7912,10 @@ ha_innobase::external_lock(
 		ulong const tx_isolation = thd_tx_isolation(ha_thd());
 		if (tx_isolation <= ISO_READ_COMMITTED
                    && binlog_format == BINLOG_FORMAT_STMT
-                   && thd_binlog_filter_ok(thd))
+#if MYSQL_VERSION_ID > 50140
+                   && thd_binlog_filter_ok(thd)
+#endif /* MYSQL_VERSION_ID > 50140 */
+		   )
 		{
 			char buf[256];
 			my_snprintf(buf, sizeof(buf),

handler/ha_innodb.h

@@ -258,12 +258,14 @@ int thd_binlog_format(const MYSQL_THD thd);
 */
 void thd_mark_transaction_to_rollback(MYSQL_THD thd, bool all);
 
+#if MYSQL_VERSION_ID > 50140
 /**
   Check if binary logging is filtered for thread's current db.
   @param  thd   Thread handle
   @retval 1 the query is not filtered, 0 otherwise.
 */
 bool thd_binlog_filter_ok(const MYSQL_THD thd);
+#endif /* MYSQL_VERSION_ID > 50140 */
 }
 
 typedef struct trx_struct trx_t;