[gtk] (3 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:

  f6ba559... gdk/win32: Some minor cleanups
  f78e49a... GDK-Win32: Force toplevel surfaces to configure as needed
  9e3a606... gdksurface-win32.c: Rename window->surface in snap_*()

Commits added to the branch:

  7771da0... gdk/win32: Some minor cleanups
  7fabcca... GDK-Win32: Force toplevel surfaces to configure as needed
  24d1859... gdksurface-win32.c: Rename window->surface in snap_*()