Add EnumDevice joystick version check.
Test multiple versions.

  InstallValidate onward.  To do this make sure we do not do the
  costing initialization work again if it is already done (by checking
  the CostingComplete Property).
- A lot of work to refine feature states, setting the state affects
  the state of all child features and also respect features that want
  to default to something other than LOCAL.

SystemInterruptInformation.

  RPC_S_ALREADY_LISTENING when the only interfaces it is listening on
  are auto listens.
- Only synchronize with server thread when necessary and move this
  into RpcMgmtWaitServerListen.

to handle DOS-style relative paths.

- Retrieve the correct attributes in ParseDisplayName().

- better heuristic for WGL_render_texture and first try of
  WGL_render_texture "emulation" using Pbuffers (deactivated by
  default)
- more traces

of an atom to avoid redundant server round-trips.

null-terminated ones, avoiding the need for a temporary buffer.

memory.

server calls for hooks that are not set.