Setup a HW button for turning the display on

[GoogleCodeExporter]

Would be great if another button besides end could be used to turn display
on after using "display off"  Display off can save a great deal of battery
with a device like the new Treo 800W when on a long call, but
unfortunately, the only hard button that reactivates the display on the
Treo also hangs up the existing call.  There's an existing app out there
called "BlackMe" that handles similar task, but allows reactivation of
screen from diff. button.

Original issue reported on code.google.com by and...@gmail.com on 1 Aug 2008 at 7:21