Curl and libcurl 7.19.3

 Public curl releases:         109
 Command line options:         128
 curl_easy_setopt() options:   158
 Public functions in libcurl:  58
 Known libcurl bindings:       37
 Contributors:                 683

This release includes the following changes:

 o CURLAUTH_DIGEST_IE bit added for CURLOPT_HTTPAUTH and CURLOPT_PROXYAUTH

This release includes the following bugfixes:

 o build failure when disabling FTP but enabling GSS
 o fixed several calls to memory functions that didn't check return codes
 o memory leak for SSL connects with libcurl/NSS when CURLOPT_ISSUERCERT was
   used
 o re-use of connections with the multi interface when multiple handles used
   the same server
 o memory leak with HTTP GSS/kerberos authentication
 o removed the default use of "Pragma: no-cache"
 o fix SCP/SFTP busyloop by using a new libssh2 0.19 function
 o bad fclose() after a fatal error in cookie code
 o curl_multi_remove_handle() when the handle was in use in a HTTP pipeline
 o GSS authentication infinite loop problem
 o 550 response from SIZE no longer treated as missing file
 o ftps:// control connections now use explicit protection level
 o dotted IPv6 addresses longer than 39 bytes failed
 o curl_easy_duphandle() doesn't try to duplicate the connection cache pointer
 o build failure on OS/400 when enabling IPv6
 o better detection of SFTP failures
 o improved connection re-use for subsequent SCP and SFTP transfers
 o multi interface does less busy-loops for SCP and SFTP transfers with libssh2
   0.19 or later
 o curl_multi_timeout() no longer returns timeout 0 when there's nothing to do
   yet
 o the multi_socket API and HTTP pipelining now work a lot better when combined

This release includes the following known bugs:

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

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

 Yang Tse, Daniel Fandrich, Jim Meyering, Christian Krause, Andreas Wurf,
 Markus Koetter, Josef Wolf, Vlad Grachov, Pawel Kierski, Igor Novoseltsev,
 Fred Machado, Ken Hirsch, Keshav Krity, Patrick Monnerat, Mark Karpeles,
 Anthony Bryan

        Thanks! (and sorry if I forgot to mention someone)