[Pharo-project] [update 2.0] #20367

[Marcus Denker]

20367
-----

Issue 6882:     Undeclared removeUnreferencedKeys extremely slow
        http://code.google.com/p/pharo/issues/detail?id=6882


Diff information:
http://ss3.gemstone.com/ss/Pharo20/Morphic-MarcusDenker.1274.diff

--
Marcus Denker -- http://marcusdenker.de