This new class waits for the first line from the client and checks if it's an
HTTP request and then passes the connection on to the irc or http code.
Before this, the IRC parser handled this as a special case which wasn't as
nice-looking as this is. :)
git-svn-id: https://znc.svn.sourceforge.net/svnroot/znc/trunk@1925 726aef4b-f618-498e-8847-2d620e286838