RFC: dsound patch

[Robert Reif]

I just sent a rather large patch to wine-patches that addresses
a number of 3D sound problems and also fixes a problem I
was having when switching between sound cards quickly.

I added more tests for 3D, COM and reference counts and
have run the tests on win2k with dx8.1 with the same results.
I have also tested with the sample programs from the DX8 SDK.

Please test it with real apps and send me feedback.

Thanks,

Bob.