curl and libcurl 7.77.0

 Public curl releases:         200
 Command line options:         240
 curl_easy_setopt() options:   288
 Public functions in libcurl:  85
 Contributors:                 2367

This release includes the following changes:

 o

This release includes the following bugfixes:

 o cookie: CURLOPT_COOKIEFILE set to NULL switches off cookies [1]
 o rustls: only return CURLE_AGAIN when TLS session is fully drained [2]

This release includes the following known bugs:

 o see docs/KNOWN_BUGS (https://curl.se/docs/knownbugs.html)

This release would not have looked like this without help, code, reports and
advice from friends like these:

  Daniel Stenberg, Jacob Hoffman-Andrews, Javier Blazquez, Stefan Karpinski,
  (4 contributors)

References to bug reports and discussions on issues:

 [1] = https://curl.se/bug/?i=6889
 [2] = https://curl.se/bug/?i=6894