BUG#: 9775
TITLE: Copy also NULL characters when authorizing a message.

DESCRIPTION: When authenticating a message, we should copy whole message
content. We should not stop at the first '\0' character.
BUG#: 9883
TITLE: Implement HTTP Negotiate authentication

DESCRIPTION: Implemented HTTP Negotiate authentication, as described in
RFC 4559. It uses SPNEGO protocol, GSSAPI as authentication API and MIT
Kerberos as GSSAPI implementation. The implementation should be
interchangeable, any GSSAPI implementation should work.