Added format to __builtins__.
Added format to __builtins__.

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