four fixes of yday and today

                                  Changelog

Daniel (25 Sep 2002)

- libcurl could leak memory when downloading multiple files using http ranges.

- Walter J. Mack provided code and docs for the new curl_free() function that

  shall be used to free memory that is allocated by libcurl and returned back

  to the application, as curl_escape() and curl_unescape() do.

- Andrés García fixed a flaw that made (among other things) dict-fetches

  return a random value.

Daniel (24 Sep 2002)

- Wez Furlong brought his initial patch that introduced curl_version_info().

  We might need to tweak it somewhat before release.

Daniel (20 Sep 2002)

- Craig Markwardt fixed another Tru64 IP resolve problem.