Redraw problems

[migueldeicaza]

• Control-L does not redraw everything when there are many toplevels running

• Redraw (Control-L) handler needs to do a painter's paint job, currently
  only Application.Top gets the SetNeedsDisplay(), but this needs to apply
  on Control-L to the entire stack.

  Repro: activate dialog box, press esc, and this clears the dialog contents.

[migueldeicaza]

Fixicated