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v2: win32u: Keep a window_rects struct in the WND structure.
win32u: Pass a window_rects struct to calc_ncsize helper.
win32u: Pass a window_rects struct from get_window_rects helper.
win32u: Introduce new get_(client|window)_rect_rel helpers.
win32u: Pass a window_rects struct to MoveWindowBits driver entry.
win32u: Pass a window_rects struct to WindowPosChanging driver entry.
win32u: Pass a window_rects struct to WindowPosChanged driver entry.
win32u: Pass window_rects structs to create_window_surface.
win32u: Use window_rects structs in apply_window_pos.
win32u: Split driver side window bits move to a separate entry.
https://gitlab.winehq.org/wine/wine/-/merge_requests/6273
Host CPPFLAGS may contain architecture or target specific flags that
don't apply to a PE cross compiler, to pass CPPFLAGS in such a case
CROSSCPPFLAGS can now be used.
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https://gitlab.winehq.org/wine/wine/-/merge_requests/6244