Mostly the work of Thorsten, from December, adapted to compile against
the current remote control code, and with one or two crucial things
added. Plus lots of SAL_INFO calls added; once it works well many of
them can be dropped. Does not work properly yet, do not cherry-pick
just this to 4.0.

Change-Id: I53361b49a2b6938c768be1ea0fc17eb5e46b6aa4