Require at least one space after "$nick:" in directed irc messages
Require at least one space after "$nick:" in directed irc messages

This fixes a bug with learning bare urls. http://foo.com/ would be
learned as "//", "foo", ".", "com", "/" rather than "http://foo.com/"

DarkMio/cobe,wodim/cobe-ng,tiagochiavericosta/cobe,LeMagnesium/cobe,tiagochiavericosta/cobe,wodim/cobe-ng,meska/cobe,meska/cobe,LeMagnesium/cobe,pteichman/cobe,DarkMio/cobe,pteichman/cobe