Squashed commit of the following:

commit a2194ecc341fa0c530d0007d8561286c8b8f2d15
Author: Andreas Huber <andih@google.com>
Date:   Fri May 21 12:50:09 2010 -0700

    Instead of including the libvpx libraries prebuilt in our tree, build them from sources.

    Change-Id: I5ec57decf1200cf9137fe13ff77d06f47950c3d7

commit 711098ca3f16800a22ccdb26a07e57e471cca438
Author: Andreas Huber <andih@google.com>
Date:   Thu May 20 15:00:27 2010 -0700

    Support for VPX/VP8 decoding in stagefright

    Change-Id: I16d93faf3f56a5f8ec39c14367704469f914db9e
    related-to-bug: 2483739

Change-Id: Ibc124f6af540c2715cb2325151eecdd6edf085ec