[6/6] wbemprox: Add tests for IWbemServices.

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
http://testbot.winehq.org/JobDetails.pl?Key=19208

Your paranoid android.


=== WNT4WSSP6 (32 bit services) ===
services.c:38: Test failed: failed to create IWbemLocator interface 80040154
services: unhandled exception c0000005 at 004019EE