WineD3D buffer FVFs will go away soon.

On Win2k SHITEMID only contains FileStructA.
This structure isn't padded like it is on WinXP and contains a
supplementary CHAR* member at its end which contains the 8.3 filename if
needed.

Skip this test as it doesn't work on Win2k.
CoCreateInstance is successful but IPersistPropertyBag_Load call fails.

Passing an absolute path to SetNameOf on Win2k display an error
message box about invalid characters in filename, forcing interaction
during test.

wined3d: Only update the swizzle and use map for streams that are actually used in device_stream_info_from_strided().

This fixes a regression introduced by d7c7c768
and exposed by ef2d7041. Unfortunately having
EXT_vertex_array_bgra support masks the problem, which is why the regression
tests didn't catch it.