fix mutex use to avoid a race condition

fix mutex use to avoid a race condition

	* libsoup/soup-dns.c (resolver_thread): fix mutex use to avoid a
	race condition

	* libsoup/soup-xmlrpc.c (soup_xmlrpc_build_faultv):
	(soup_xmlrpc_set_response, soup_xmlrpc_set_fault):
	(soup_xmlrpc_parse_method_call): Fix misc server-side stuff
	(soup_xmlrpc_parse_method_response): Fix fault parsing

	* libsoup/soup-xmlrpc.h (SoupXMLRPCFault): add semi-standard fault
	codes from
	http://xmlrpc-epi.sourceforge.net/specs/rfc.fault_codes.php

	* tests/xmlrpc-server.php (sum): return a <fault> if the arguments
	are wrong (so that xmlrpc-test can test that case).
	(dateChange): change to take two parameters, a date and a struct,
	instead of putting the date in the struct, since we weren't
	previously testing multiple parameter handling.

	* tests/xmlrpc-test.c (main): Add a -u flag to specify an
	alternate URL.
	(do_xmlrpc): Remove level 3 debug output, which is now redundant
	with the SoupLogger stuff.
	(test_dateChange): update for dateChange prototype change
	(test_fault_malformed, test_fault_method, test_fault_args): test
	handling of faults

	* tests/xmlrpc-server-test.c: Test the server-side XML-RPC API (by
	implementing the same methods as xmlrpc-server.php and then
	using xmlrpc-test)

svn path=/trunk/; revision=1056