The source from this directory was copied from the libvpx
git repository using the update.py script. The only changes
made were those applied by update.py and the addition of
moz.build and Makefile.in build files for the
Mozilla build system.
The libvpx git repository is:
https://chromium.googlesource.com/webm/libvpx
The git commit ID used was c74bf6d889992c3cabe017ec353ca85c323107cd