fusion: Use parsed properties for assembly enumeration instead of trying to parse the display name again.

The display name passed in may not be normalized, e.g. if the version number
is passed as "1.0.0.00000" instead of "1.0.0.0". This patch should also cut
down on case insensitive file searches.

Office 2007 SP1 installer depends on this. I will supply a test as
soon as I figure out how to create a variation of the test assembly
in dlls/fusion/tests/asmcache.c.

comdlg32/tests: Vista can return a failure from StartDoc when using the XPS driver - don't fail the test in this case.

Should make it a bit clearer what's happening in some cases.

glWeightPointerARB() obviously accepts floating point data.

The code tried to optimize the usage of the 32bit A(scii) winmm API
with a 16bit driver.

gdi32: Move 16-bit functions not exported in gdi32.dll into files compiled only when 16-bit functionality is enabled.