Removed vc support from Makefile.in
Added mbot-dongs modules shell and urlsniffer
Added support for urlsniffer and shell modules in mod/Makefile.in

urlsniffer requires easycurl from https://github.com/ticklemynausea/easycurl.
mbot won't build without it. must change configure so it checks for the presence
of easycurl.
Changed the bot's behaviour when receiving a @#channel privmsg (would respond to the nick instead of the @#channel)