Also lock/unlock the module only on creation/destruction of the object.

A surface can stay in DIB or user memory just fine. When buffers get
their own location an exception for them has to be added.

Buffers, heap memory, user memory and DIBs will have their own
locations. This field specifies which location is used when the surface
is mapped.

include: There is no need to duplicate CLSID_DirectMusicAudioPathConfig as CLSID_DirectMusicAudioPath.

CLSID_DirectMusicAudioPath is private to Wine and produces the confusion
between the COM objects DirectMusicAudioPath and
DirectMusicAudioPathConfig. But those are totally different things.