hi friends!

I just committed code that changes how libcurl does POST/PUT with
NTLM/Digest/anyauth.

The new approach is described closer in the CHANGES file, but basicly means
that it uses HEAD more to authenticate and then does the POST/PUT.

This makes libcurl capable of doing POST with NTLM against IIS6, which
previous versions failed to do.

I also added four new test cases to verify the concept.

-- 
     Daniel Stenberg -- http://curl.haxx.se -- http://daniel.haxx.se
      Dedicated custom curl help for hire: http://haxx.se/curl.html