Wildcard flushing not working

Same problem here, had to restart memcached after the css file was recreated.

This regression is because memcache_wildcards() statically caches wildcards per table and cid, but this is not reset for each cid when a flush occurs. Adding unset($wildcards[$table]); at the end of the if ($flush) block fixes this, but I think the patch in #911232-38: A high percentage of getMulti operations are failing to hit cache takes a better approach of caching all wildcards per table in a single array.

Also, the cache wipe test fails, because the $cache_tables[$table] > $cache->created test should be $cache_tables[$table] >= $cache->created.

Subscribing.