In HttpQueryInfo if dwInfoLevel includes HTTP_QUERY_CUSTOM then
lpBuffer is In/Out because the header we are querying is there.
Additionally standard headers can be queried in this manner as well
(such as Set-Cookie).

- Fix device probing at driver load time.
- Fix memory leaks at driver exit time.

- add directx9 support for dplay8.h and dpaddr.h
- new file dplobby8.h

- return correct MM error code when no connection to server has been
  opened
- don't close the AU driver if it hasn't been opened

When converting SendRequestExA -> W we need to set the lpcszHeader
parameter to NULL if the original one is NULL.

Fixed the return value type.

open them.

security provider.

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.