Update LibVPX base code to 1.3.0
Partial update of MozillaBuild make files.
Marker: {Progress Placeholder}
Revert "Partial update of MozillaBuild make files."

This reverts commit 11563cb3850ba001e3fbe838599e1509f043a79c.
Always build libvpx encoder files regardless of --disable-webrtc
Part 1: Update libvpx build files (x86)
Merge pull request #3 from binoc-software/BINOC_OUTBOUND

Merge contributed libvpx 1.3.0 commits from BinOC
Add Opus audio to WebM media decoder
Update patent grant as released by Google.
Enable VP9 playback in HTML5 elements.
Merge branch 'libvpx-work'

* libvpx-work:
  Enable VP9 playback in HTML5 elements.
  Update patent grant as released by Google.
  Add Opus audio to WebM media decoder
  Part 1: Update libvpx build files (x86)
  Always build libvpx encoder files regardless of --disable-webrtc
  Revert "Partial update of MozillaBuild make files."
  Partial update of MozillaBuild make files. Marker: {Progress Placeholder}
  Update LibVPX base code to 1.3.0