ntlm.el does not support the NTLM2 Session protocol [1]; web services
that require an NTLM2 Session response for HTTP authentication reject
connections from Emacs (via [2]).  The attached patch adds support for
this variant of the protocol.

Thomas

1. http://en.wikipedia.org/wiki/NTLM#NTLM2_Session
2. http://code.google.com/p/url-http-ntlm/

2013-10-13  Thomas Fitzsimmons  <fitzsim@fitzsim.org>

	* net/ntlm.el (ntlm-build-auth-response): Add NTLM2 Session
	support.