Added items we've discussed previously, and URLs to dev notes discussing

TODO

 Things to do in project cURL. Please tell me what you think, contribute and

 send me patches that improve things!

 send me patches that improve things! Also check the http://curl.haxx.se/dev

 web section for various development notes.

To do in a future release (random order):

 * Make SSL session ids get used if multiple HTTPS documents from the same

   host is requested. Note: is this really prioritized now with the persistent

   connections?

   host is requested. http://curl.haxx.se/dev/SSL_session_id.txt

 * HTTP PUT for files passed on stdin. Requires libcurl to send the file

   with chunked content encoding. http://curl.haxx.se/dev/HTTP-PUT-stdin.txt

 * Introduce another callback interface for upload/download that makes one

   less copy of data and thus a faster operation.

   http://curl.haxx.se/dev/no_copy_callbacks.txt

 * Suggested on the mailing list: CURLOPT_FTP_MKDIR...!

   (http://gnutls.hellug.gr/)

 * Add asynchronous name resolving, as this enables full timeout support for

   fork() systems.

   fork() systems. http://curl.haxx.se/dev/async-resolver.txt

 * Move non-URL related functions that are used by both the lib and the curl

   application to a separate "portability lib".