Changed last/lastfrom to the new method as per RFE 798374.
Changed last/lastfrom to the new method as per RFE 798374.

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