[PATCH v2 0/3] MR8234: opengl32: Move glFlush / glFinish hooking from win32u.

[Rémi Bernon]

For !8210

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  v2: winemac: Use opengl_funcs for glFlush.
      winex11: Use opengl_funcs for glFlush / glFinish.
      opengl32: Move glFlush / glFinish hooking from win32u.
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/8234