[gtk] (4 commits) Non-fast-forward update to branch wip.win32.fixes

[Chun-wei Fan <fanchunwei src gnome org>]

The branch 'wip.win32.fixes' was changed in a way that was not a fast-forward update.
NOTE: This may cause problems for people pulling from the branch. For more information,
please see:

 https://wiki.gnome.org/Git/Help/NonFastForward

Commits removed from the branch:

  6670450... partial WIP port of GDK4-Broadway to Windows...
  fd71e7b... gtk: Define _WIN32_WINNT and friends as cflags
  33a4067... GDK/Win32: Re-enable libANGLE GLES to work
  9e7f217... GdkWin32: Clean up gdk_win32_surface_handle_queued_move_res
  c8d71f9... gdkcairocontext-win32.c: Unify parameter name

Commits added to the branch:

  d95ed19... gtk: Define _WIN32_WINNT and friends as cflags
  6ec3704... GDK/Win32: Re-enable libANGLE GLES to work
  808d758... GdkWin32: Clean up gdk_win32_surface_handle_queued_move_res
  cae821c... gdkcairocontext-win32.c: Unify parameter name