Landing patch for bug 17578 "I want Kerberos authentication and TGT forwarding"

This patch enables preliminary support for the SPNEGO protocol (Microsoft's
Negotiate protocol) via the GSSAPI library.  This means that only UNIX-like
operating systems (including Linux and OSX) are supported.  A SSPI-based
solution is needed for WIN32.

Only HTTP authentication is currently supported.  Mail protocols will follow.

Patch by:
  Daniel Kouril <kouril@ics.muni.cz> (original author)
  Wyllys Ingersoll <wyllys.ingersoll@sun.com>
  Christopher Nebergall <cneberg@sandia.gov>
  Darin Fisher <darin@meer.net>

r=dougt sr=bryner a=chofmann

extensions/auth/Makefile.in

@@ -0,0 +1,79 @@
+# vim:set ts=8 sw=8 sts=8 noet:
+# ***** BEGIN LICENSE BLOCK *****
+# Version: MPL 1.1/GPL 2.0/LGPL 2.1
+#
+# The contents of this file are subject to the Mozilla Public License Version
+# 1.1 (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+# http://www.mozilla.org/MPL/
+#
+# Software distributed under the License is distributed on an "AS IS" basis,
+# WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+# for the specific language governing rights and limitations under the
+# License.
+#
+# The Original Code is negotiateauth.
+#
+# The Initial Developer of the Original Code is
+# Daniel Kouril <kouril@ics.muni.cz>
+#
+# Portions created by the Initial Developer are Copyright (C) 2003
+# the Initial Developer. All Rights Reserved.
+#
+# Contributor(s):
+#   Daniel Kouril <kouril@ics.muni.cz> (original author)
+#   Wyllys Ingersoll <wyllys.ingersoll@sun.com>
+#   Christopher Nebergall <cneberg@sandia.gov>
+#   Darin Fisher <darin@meer.net>
+#
+# Alternatively, the contents of this file may be used under the terms of
+# either the GNU General Public License Version 2 or later (the "GPL"), or
+# the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+# in which case the provisions of the GPL or the LGPL are applicable instead
+# of those above. If you wish to allow use of your version of this file only
+# under the terms of either the GPL or the LGPL, and not to allow others to
+# use your version of this file under the terms of the MPL, indicate your
+# decision by deleting the provisions above and replace them with the notice
+# and other provisions required by the GPL or the LGPL. If you do not delete
+# the provisions above, a recipient may use your version of this file under
+# the terms of any one of the MPL, the GPL or the LGPL.
+#
+# ***** END LICENSE BLOCK *****
+
+DEPTH		= ../..
+topsrcdir	= @top_srcdir@
+srcdir		= @srcdir@
+VPATH		= @srcdir@
+
+include $(DEPTH)/config/autoconf.mk
+
+MODULE		= negotiateauth
+LIBRARY_NAME	= negotiateauth
+EXPORT_LIBRARY	= 1
+IS_COMPONENT	= 1
+
+LOCAL_INCLUDES	= $(GSSAPI_INCLUDES)
+
+REQUIRES	= \
+		xpcom \
+		string \
+		necko \
+		pref \
+		$(NULL)
+
+CPPSRCS		= \
+		nsHttpGssapiAuth.cpp \
+		nsHttpGssapiAuthModule.cpp \
+		$(NULL)
+
+EXTRA_DSO_LDOPTS = \
+		$(MOZ_COMPONENT_LIBS) \
+		$(GSSAPI_LIBS) \
+		$(NULL)
+
+# make sure this component is never statically linked into the main
+# application.  this is necessary since we don't want to force users
+# to install GSSAPI libraries in order to use the rest of mozilla ;-)
+FORCE_SHARED_LIB= 1
+
+include $(topsrcdir)/config/rules.mk