Changed the non-strictRfc implementation of isNick not to allow full hostmasks.
Changed the non-strictRfc implementation of isNick not to allow full hostmasks.

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