[paragui-users] patch

[H. C.]

- added a method to PG_Application to clear and delete the background (void
DeleteBackground())
- fixed a potential memory leak in PG_Application resulting from changing
non-scaled backgrounds
- added a method to PG_RichEdit to set the default alignment (void
SetAutoVerticalResize(...))
- added a method to PG_RichEdit to activate / deactivate auto vertical
resize (void SetAlignment(...))

(c: kind regards, H. C.

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