Added DCC CHAT support.
Added DCC CHAT support.

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