Curl and libcurl 7.21.4

 Public curl releases:         120
 Command line options:         143
 curl_easy_setopt() options:   185
 Public functions in libcurl:  58
 Known libcurl bindings:       39
 Contributors:                 834

This release includes the following changes:

 o CURLINFO_FTP_ENTRY_PATH now supports SFTP
 o introduced new framework for unit-testing
 o IDN: use win32 API if told to
 o ares: ask for both IPv4 and IPv6 addresses

This release includes the following bugfixes:

 o SMTP: add brackets for MAIL FROM
 o ossl_seed: no more RAND_screen (on Windows)
 o multi: connect fail => use next IP address
 o use the timeout when using multiple IP addresses similar to how
   the easy interface does it
 o cookies: tricked dotcounter fixed
 o pubkey_show: allocate buffer to fit any-size result
 o Curl_nss_connect: avoid PATH_MAX
 o Curl_do: avoid using stale conn pointer
 o tftpd test server: avoid buffer overflow report from glibc
 o 

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:

 Brad Hards, Guenter Knauf, Luke Amery, Pasha Kuznetsov, Patrick Monnerat,
 Paul Howarth, Pierre Joye, Tommie Gannert, Yang Tse

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