[Bug 2680] Wine should report 32bit color depth instead of 24bit

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=2680

------- Additional Comments From [e-mail]  2005-28-01 11:24 -------
I did just try to force xorg to use a 32bit framebuffer ("-fbbpp 32"), so it 
should truely be the same as Windows' "32bit" setting. But Windows apps still 
thing we're using 24bits...

I tried to find the corresponding code in Wine, to try a quick hack (report 
framebuffer depth instead of color depth if color depth = 24), but I couldn't 
find the function. Should be getDeviceCaps(BITSPIXELS)? Where's that one?