Added __slots__ to IrcDict and IrcSet for optimization purposes.
Added __slots__ to IrcDict and IrcSet for optimization purposes.

mazaclub/mazabot-core,haxwithaxe/supybot,Ban3/Limnoria,raboof/supybot,mazaclub/mazabot-core,kblin/supybot-gsoc,prashantpawar/supybot-rothbot,buildbot/supybot,ProgVal/Limnoria-test,ProgVal/Limnoria-test,Ban3/Limnoria,jeffmahoney/supybot,frumiousbandersnatch/supybot-code