(manual port from 4.0 - was needed)

Fix for BUG#4971 "CREATE TABLE ... TYPE=HEAP SELECT ... stops slave (wrong DELETE in binlog)":
replacing the no_log argument of mysql_create_table() by some safer method
(temporarily setting OPTION_BIN_LOG to 0) which guarantees that even the automatic
DELETE FROM heap_table does not get into the binlog when a not-yet-existing HEAP table
is opened by mysql_create_table().

sql/log.cc

@@ -1877,6 +1877,20 @@ void MYSQL_LOG::set_max_size(ulong max_size_arg)
 }
 
 
+Disable_binlog::Disable_binlog(THD *thd_arg) : 
+  thd(thd_arg),
+  save_options(thd_arg->options)
+{
+  thd_arg->options&= ~OPTION_BIN_LOG;
+};
+
+
+Disable_binlog::~Disable_binlog()
+{
+  thd->options= save_options;
+}
+
+
 /*
   Check if a string is a valid number