[PATCH 00/24] Richedit enhancements

[Eric Pouech]

The following serie implements various enhancements to rich edit DLL:
- improved CHARFORMAT2 and PARAFORMAT2 support
- visual belts and whistled from CHARFORMAT2 and PARAFORMAT2 including
  underlines, borders, paragraph spacing and indenting
- some speed up (especially when redraw flag is off)
- some code clean up
- some fixes (including random crashes while computing positions)

A+
-- 
Eric Pouech