Google: Fix Language.normalize to not prepend the empty string with 'lang_'
Google: Fix Language.normalize to not prepend the empty string with 'lang_'

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