recognize user:password in URLs that include port numbers. when giving user/pwd in an URL, eg. hg pull http://user:pwd@host.com:666/hg/something, hg would still ask for user/pwd in interactive mode (or fail in non-interactive)

adding b
   rev    offset  length   base linkrev nodeid       p1           p2
     0         0       3      0       0 1e88685f5dde 000000000000 000000000000