Make this a GObject and specifically a SoupSessionFeature. Add an

Make this a GObject and specifically a SoupSessionFeature. Add an

	* libsoup/soup-auth-manager.c: Make this a GObject and
	specifically a SoupSessionFeature. Add an "authenticate" signal,
	and emit that rather than explicitly calling into the SoupSession
	and telling it when to emit its own authenticate signal.

	* libsoup/soup-auth-manager-ntlm.c: Make this a subclass of
	SoupAuthManager, with NTLM support controllable via a property.

	* libsoup/soup-session.c (soup_session_init): create an
	auth_manager of type SOUP_TYPE_AUTH_MANAGER_NTLM, but defaulting
	to USE_NTLM=FALSE. Connect to its "authenticate" signal, and call
	soup_session_add_feature() on it.
	(set_property, get_property): proxy the USE_NTLM property to the
	auth manager.
	(auth_manager_authenticate): signal handler for SoupAuthManager
	"authenticate" signal. (Replaces soup_session_emit_authenticate(),
	which is no longer needed)

svn path=/trunk/; revision=1134