Added error reporting for unmet capability checks.
Added error reporting for unmet capability checks.

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