Squashed commit of the following:

commit b03d5f537dee393affddf89663ae6977a5512d98
Author: Andreas Huber <andih@google.com>
Date:   Thu Dec 17 14:00:37 2009 -0800

    Update cleanspec to facilitate incremental building with full stagefright lib.

commit b92560a1989f8b9cb27a8772cec5346d3d90dc84
Author: Andreas Huber <andih@google.com>
Date:   Thu Dec 17 13:31:48 2009 -0800

    Enable building stagefright in all builds, make stagefright the default player.