* do not run the demos in background, if not they can not be ctrl+c.
* fix service dependencies: required camera and weston.
* patch the examples to:
** set camera resolution to 1280x720
** set default format to ov5640 camera (YUYV)
** detect the "x" event when the demo application is running in windowed mode (not fullscreen).
Signed-off-by: Isaac Hermida <isaac.hermida@digi.com>
Isaac Hermida