Protocols.LysKOM has no cache GC
Imported from http://bugzilla.roxen.com/bugzilla/show_bug.cgi?id=2682
Reported by Martin Nilsson, IDA nilsson@pike.ida.liu.se
Using Protocols.LysKOM quickly uses up memory since a lot of objects are cached. A simple flush_caches() method, or a more elaborate solution with a user defined size triggered GC would be nice.