[Letux-kernel] rtcwake fior suspend

[H. Nikolaus Schaller]

Hi,
just FYI, I played a little with rtcwake (Debian package util-linux).

This works:

	rtcwake -m mem -s 10

So we can make the measure-suspend script more general by using
this command instead of calculating a wakeup time by shell commands
and writing to /sys.

BR,
Nikolaus