--proxy-ntlm fix and test case 163

                                  Changelog

Daniel (23 April 2004)

- I also added test case 163 just to make sure -F "var=<file" works fine and

  can pass on characters such as newlines, carriage-return and tabs.

- When we added test case 162 without adding the necessary requirement field

  in the test meta data we could see that curl didn't complain if you used

  --proxy-ntlm even if the underlying libcurl it uses has no NTLM support! I

  now made it check this first, and it now exists with a "the installed

  libcurl version doesn't support this" message if it happens again.

Daniel (22 April 2004)

- David Byron found and fixed a small bug with the --fail and authentication

  stuff added a few weeks ago.  Turns out that if you specify --proxy-ntlm and