[PATCH 5/5] winecfg: Distinguish between Windows XP and Windows XP x64

[Ken Sharp]

winecfg: Distinguish between Windows XP and Windows XP x64

A 64-bit WINEPREFIX user may want to select XP or XP x64. The two
have different kernel versions (NT 5.1 versus NT 5.2).

I think this may confuse users though so I send it here (rather than 
wine-patches) just for the hell of it.

Besides, I'm not aware of a use case.