Changes in 7.23.0 - November 15 2011

Changes:

• Empty headers can be sent in HTTP requests by terminating with a semicolon
• SSL session sharing support added to curl_share_setopt()
• Added support to MAIL FROM for the optional SIZE parameter
• smtp: Added support for NTLM authentication
• curl tool: code split into tool_*.[ch] files

Bugfixes:

• handle HTTP redirects to "https://hostname/path"
• SMTP without --mail-from caused segfault
• prevent extra progress meter headers between multiple files
• allow Content-Length to be replaced when sending HTTP requests
• curl now always sets postfieldsize to allow --data-binary and --data to be mixed in the same command line
• curl_multi_fdset: avoid FD_SET out of bounds
• lots of MinGW build tweaks
• Curl_gethostname: return un-qualified machine name
• fixed the openssl version number configure check
• nss: certificates from files are no longer looked up by file base names
• returning abort from the progress function when using the multi interface would not properly cancel the transfer and close the connection
• fix libcurl.m4 to not fail with modern gcc versions
• ftp: improved the failed PORT hostname resolved error message
• TFTP timeout and unexpected block adjustments
• HTTP and GOPHER test server-side connection closing adjustments
• fix endless loop upon transport connection timeout
• don't clobber errno on failed connect
• typecheck: allow NULL to unset CURLOPT_ERRORBUFFER
• formdata: ack read callback abort
• make --show-error properly position independent
• set the ipv6-connection boolean correctly on connect
• SMTP: fix end-of-body string escaping
• gtls: only call gnutls_transport_set_lowat with < gnutls-2.12.0
• HTTP: handle multiple auths in a single WWW-Authenticate line
• curl_multi_fdset: correct fdset with FTP PORT use
• windbuild: fix the static build
• fix builds with GnuTLS version 3
• fix calling of OpenSSL's ERR_remove_state(0)
• HTTP auth: fix proxy Negotiate bug when Negotiate not requested
• ftp PORT: don't hang if bind() fails
• -# would crash on terminals wider than 256 columns

Further