www_tools http client

[Hal Snyder]

Sean's recent postings on http clients reminded me, there is a nice,
small http client in Joe Armstrong's contrib,

  http://www.erlang.org/user.html#www_tools-1.0

but it doesn't compile with recent releases of OTP. With apologies to
Joe, I've posted an updated version of url.erl at

  ftp://ftp.enteract.com/users/hal/url.erl

The new version makes the jump from socket to gen_tcp, so it compiles
with R9. Also added are raw_post_url/3 and /4 entries.

There is a dependency on the url_parse.erl module from Joe's tarball,
but that compiles unmodified.

Comments/brickbats welcome. Caveat utilitor.