Log Message:
Changes 7.37.0:
URL parser: IPv6 zone identifiers are now supported
CURLOPT_PROXYHEADER: set headers for proxy-only
CURLOPT_HEADEROPT: added
curl: add --proxy-header
sasl: Added support for DIGEST-MD5 via Windows SSPI
sasl: Added DIGEST-MD5 qop-option validation in native challange handling
imap: Expanded mailbox SEARCH support to use URL query strings
imap: Extended FETCH support to include PARTIAL URL specifier
nss: implement non-blocking SSL handshake
build: Reworked Visual Studio project files
poll: enable poll on darwin13
mk-ca-bundle: added -p
libtests: add a wait_ms() function