Fix DispCallFunc to work with MSDN-undocumented behaviour used by
Office 2003 and document the function.

Fix more fallout from dispinterface retval patch: make typelib
marshaler use the internal function description so that it calls
dispinterface functions with the correct number of parameters again.
Also fixes some memory leaks caused by the fact that a corresponding
ReleaseXDesc function has to be called for each GetXDesc.

security provider.

Move wave in/out initialization from wave out to driver.
Add index number to device names.
Fix memset bug where only first wave in caps was zeroed.

- fix for playback after a sound has been recorded
- shall fix also opening the mci device without name
- bug reported (and fix tested) by Peter Astrand

TRACE cleanups.

Rename the dwFlags parameter of ITypeInfo_Invoke since it is not a
DWORD, but an unsigned short.

Change tests accordingly.
Add small test for WaitNamedPipe.