constant equivalents.  It's now obvious why these were chosen.  Should
be a NOP.

Don't list volume in capabilities when mixer is missing.

Add tests for CALLBACK_FUNCTION and CALLBACK_THREAD.  The only
callback type not tested now is CALLBACK_WINDOW.

- report the correct image base for a symbol which is
  seen as being in a builtin PE module, whilst its debug 
  information is gotten from an ELF module
- module_get_debug now returns a pair of modules
  (the requested that has to be presented back to the client
   and the effective one, which contains the debug info)
- reworked SymFromName in order to provide also the revelant
  module base address

some unneeded prototypes.

and PSP_HIDEHEADER in CreatePropertySheetPageA/W, handle resource ids.

proper value regardless of PSP_USETITLE, use it unconditionally.

Add some tests.

Use getaddrinfo to get the sockaddr to use for connecting to a remote
server as Connection->NetworkAddr may be a hostname as well. Use a
loop to support both IP and IPv6.

Remove the fixme printed if CoGetClassObject fails in
CoCreateInstance, because we already print an error in all cases and
the error more accurately pin-points the source of the problem.

pointer checks and writing the pointer ID to the wire.