Add support for locale-switching on Windows.
Implement a very dirty work-around for the absurdity of Windows.
Fix a few things.
Consider control points when calculating the boundaries of a SplineSet in SplineSetQuickBounds.
Skip control points if they don't exist.
Remove last uncontrolled calls to threaded locale functions.
Cleanup the defines
Merge pull request #1717 from fontforge/locale_threadsafe_1

Add support for locale-switching on Windows.
Merge pull request #1736 from fontforge/bounding_box_control_points_1

Consider control points when calculating the boundaries of a SplineSet.
Skip drawing blank text in _GXPDraw_DoText.
Merge pull request #1738 from fontforge/stop_drawing_empty_text_1

Skip drawing blank text in _GXPDraw_DoText.