wined3d:match wine's device name string to windows' one

[Louis. Lenders]

this is part of http://bugs.winehq.org/show_bug.cgi?id=18529

Can also be seen from all test results (in d3d9/visual.c) on native windows (for example
http://test.winehq.org/data/1394c6eee3150c2ecf588a25eed6d329adc91950/xp_af-xpsp3/d3d9:visual.html) where device name is \\.\DISPLAY1, whereas in wine it resolves to \\.\DISPLAY .



      
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