DEVELOPMENTAL: use uniscribe in the edit control

[Aric Stewart]

This patch is experimental but people had some interest in testing it 
and I would love some more testing.

What is currently known not to be working:
  * Tabs
  * Font Fallback
  * Complex composed glyphs are not breaking or highlighting properly.

Testing is appreceated. Send me crashes or incorrect behavior.

It should work with both native and builtin usp10.

The patch will be cleaned and broken up before being send it this is 
just for testing.

thanks!

-aric

---
  dlls/user32/edit.c |  495 
+++++++++++++++++++++++++++-------------------------
  1 files changed, 256 insertions(+), 239 deletions(-)