VC++ makefile, HTTP 204, cookie fix, non-blocking socket for better SSL

                               History of Changes

Daniel (7 January 2002)

- I worked with Georg Horn and comments from Götz Babin-Ebell and switch

  curl's socket operation completely over to non-blocking for the entire

  operation. We had to do this to make the SSL connection phase timeout

  properly without signals. A little extra code to deal with this was added.

- T. Bharath pointed out a slightly obscure cookie engine flaw.

- Pete Su pointed out that libcurl didn't treat HTTP code 204 as it should.

  204-replies never provides a response-body. This resulted in bad persistant

  behavior when 204 was received.

Daniel (5 January 2002)

- SM updated the VC++ library Makefiles for the new source files.

Daniel (4 January 2002)

- I discovered that we wrongly used inet_ntoa() (instead of inet_ntoa_r() in

  two places in the source code). One happened with VERBOSE set on connects,