curl 7.19.1

Changes:
pkg-config can now show supported_protocols and supported_features
Added CURLOPT_CERTINFO and CURLINFO_CERTINFO
Added CURLOPT_POSTREDIR
Better detect HTTP 1.0 servers and don't do HTTP 1.1 requests on them
configure --disable-proxy disables proxy support
Added CURLOPT_USERNAME and CURLOPT_PASSWORD
--interface now works with IPv6 connections on glibc systems
Added CURLOPT_PROXYUSERNAME and CURLOPT_PROXYPASSWORD

Bugfixes:
MingW32 non-configure builds are now largefile feature enabled by default
NetWare LIBC builds are now largefile feature enabled by default
curl_easy_pause() could behave wrongly on unpause
cookies with invalid expire dates are now considered expired
HTTP pipelining over proxy
fix regression in configure script which affected OpenSSL builds on MSYS
GnuTLS-based multi interface doing HTTPS over proxy failed
recv() failures cause CURLE_RECV_ERROR
SFTP over SOCKS crash fixed
thread-safety issues addressed for NSS-powered libcurls
removed the use of mktime() and gmtime(_r)() in date parsing and conversions
HTTP Digest with a blank realm did wrong
CURLINFO_REDIRECT_URL didn't work with the multi interface
CURLOPT_RANGE now works for SFTP downloads
FTP SIZE response 550 now causes CURLE_REMOTE_FILE_NOT_FOUND
CURLINFO_PRIMARY_IP fixed for persistent connection re-use cases
remove_handle/add_handle multi interface timer callback flaw
CURLINFO_REDIRECT_URL memory leak and wrong-doing
case insensitive string matching works in Turkish too
Solaris builds get _REENTRANT defined properly and work again
Garbage sent on chunky upload after curl_easy_pause()
ipv4 name resolves when libcurl is built with ipv6-enabled c-ares
undersized IPv6 address internal buffer truncated long IPv6 addresses
CURLINFO_FILETIME works for file:// transfers as well