header file fixing

                                  Changelog

Daniel(22 January 2004)

- Removed the '#define HttpPost' from the public header file, as curl_httppost

  is the proper name and it has been for quite some time now. Fixes another

  name space pollution.

- Added 'curl_off_t' typedef in the public header file, to be used to provide

  large file sizes to the *_LARGE options. Adjusted the code all over to use

  this variable type instead of 'off_t'. This is an attempt to make the large

  file support work on more platforms. The configure script now checks the

  size of the curl_off_t instead of the plain off_t.

Version 7.11.0 (22 Januari 2004)

Daniel (21 January 2004)