Quit XBMC when TV is off

[mihailescu2m]

modify the XBMC init.d script such that when XBMC exits it will start a libCEC program that monitors HDMI commands.
when the input source that the RPi is connected to becomes active (power on TV on HDMI input, or switch from TV to HDMI input), my program starts XBMC and then quits.
this part is done and works. the issue is quitting XBMC with the remote control power button.