* NEW: ImageEditor: the magic wand automatically merge the current
selection.
[GB.CLIPPER]
* NEW: Polygon is a new class that represents a polygon. It can be
automatically converted to and from PointF[].
* NEW: All methods now use Polygon and Polygon[] instead of PointF[] and
PointF[][].
* NEW: Clipper.Union() is a new method that returns the union of an array
of polygons.
git-svn-id: svn://localhost/gambas/trunk@5794 867c0c6c-44f3-4631-809d-bfa615b0a4ec
d452797475