Changed OverflowError message.
Changed OverflowError message.

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