[PATCH 6/6] win32u: Move IsWindow implementation from user32.

[Jacek Caban]

Signed-off-by: Jacek Caban <jacek at codeweavers.com>
---
I considered using GetWindowThreadProcessId() for IsWindow instead, but 
that wouldn't do the right thing for things like desktops created 
directly by server.

If we had shared handle table, both this patch and the previous one 
could be implemented on PE side (without syscall nor server call), but 
even then we'd need something exposed to drivers.

  dlls/user32/win.c            | 21 +------------------
  dlls/win32u/gdiobj.c         |  1 +
  dlls/win32u/win32u.spec      |  2 +-
  dlls/win32u/win32u_private.h |  1 +
  dlls/win32u/window.c         | 40 ++++++++++++++++++++++++++++++++++++
  dlls/win32u/wrappers.c       |  6 ++++++
  include/ntuser.h             |  7 +++++++
  7 files changed, 57 insertions(+), 21 deletions(-)

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