[Bug 9277] Folder selection doesn't work correctly since 0.9.42

http://bugs.winehq.org/show_bug.cgi?id=9277

--- Comment #18 from Mikolaj Zalewski   2007-09-11 15:42:37 ---
Created an attachment (id=8029)
 --> (http://bugs.winehq.org/attachment.cgi?id=8029)
patch

Could someone check if this patch helps? It changes the cache from GUID-based
to PIDL-based. As a PIDL changes even if the file mtime changes I don't try to
keep all the objects in the cache but only 32 most recently used ones.

The problem with the patch was that Photoshop CS calls this function very often
and even an ILCombine/ILFree seems to make a difference in speed. That's why
there is a unplesant 'if' at the beginning. I'll see if this can be written
somehow better.