Fix session ids by using weak refs for the logger cleanup rather than

Fix session ids by using weak refs for the logger cleanup rather than

	* libsoup/soup-logger.c (soup_logger_attach): Fix session ids by
	using weak refs for the logger cleanup rather than trying to use
	the same qdata for two different things.
	(print_request, print_response): use full type names in the
	Soup-Debug line, since SoupSessionSync and SoupSessionAsync get
	numbered separately.

svn path=/trunk/; revision=1054