two bugfixes, one change and one test script modification

                                  Changelog

Daniel (2 May 2005)

- Made curl recognize the environment variables Lynx (and others?) support for

  pointing out the CA cert path/file: SSL_CERT_DIR and SSL_CERT_FILE. If

  CURL_CA_BUNDLE is not set, they are checked afterwards.

  Like before: on windows if none of these are set, it checks for the ca cert

  file like this:

  1. application's directory

  2. current working directory

  3. Windows System directory (e.g. C:\windows\system32)

  4. Windows Directory (e.g. C:\windows)

  5. all directories along %PATH%

Daniel (1 May 2005)

- The runtests.pl script now starts test servers by doing fork() and exec()

  instead of the previous approach. This is less complicated and should

  hopefully lead to less "leaked" servers (servers that aren't stopped

  properly when the tests are stopped).

- Alexander Zhuravlev found a case when you did "curl -I [URL]" and it

  complained on the chunked encoding, even though a HEAD should never return a

  body and thus it cannot be a chunked-encoding problem!

Daniel (30 April 2005)

- Alexander Zhuravlev found out that (lib)curl SIGSEGVed when using

  --interface on an address that can't be bound.

Daniel (28 April 2005)

- Working on fixing up test cases to mark sections as 'mode=text' for things

  that curl writes as text files, since then they can get different line