[PATCH] dxgi: Implement dxgi_output_GetDesc().

[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
https://testbot.winehq.org/JobDetails.pl?Key=18498

Your paranoid android.


=== w1064 (32 bit device) ===
device.c:1147: Test failed: Got unexpected hr 0, test 16.
device.c:1147: Test failed: Got unexpected hr 0x87a0001, test 39.