store the GSource in priv, don't ref the session. Otherwise the session

store the GSource in priv, don't ref the session. Otherwise the session

	* libsoup/soup-session-async.c (do_idle_run_queue): store the
	GSource in priv, don't ref the session. Otherwise the session
	won't get destroyed if you abort it and then don't return to its
	main loop. (addendum to #498509, Arnout Vandecappelle)
	(finalize): Destroy the idle_run_queue source when finalizing.
	(run_queue, got_connection): Ref the session when calling
	soup_connection_connect_async(), and do a
	do_idle_run_queue()+unref in got_connection, to ensure correct
	handling regardless of what the application does with its own ref
	on the session.
	(final_finished): Likewise, ref/do_idle_run_queue/unref rather
	than calling run_queue directly and playing with weak pointers.

	* libsoup/soup-session.c (connect_result): ref the session around
	the cancel-if-error loop

	Fixes #533473, crash in seahorse when connecting to a
	non-responsive key server.

	* tests/misc-test.c (do_callback_unref_test): Add a test for the
	bug in #533473.

	* tests/test-utils.c (soup_test_session_abort_unref): abort and
	unref a SoupSession, and consider it an error if the session still
	exists afterward. Suggested by Arnout Vandecappelle.
	(test_server_shutdown): Likewise, consider it an error if the
	server is leaked.

	* tests/*.c: Use soup_test_session_abort_unref().

svn path=/trunk/; revision=1168