Update LibVPX base code to 1.3.0
Partial update of MozillaBuild make files.
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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
Image documents: Pull an updated size from the content frame to account for any size change due to CSS properties like "image-orientation".
Preload the new tab page.
Resource leak fix.

Prevent accumulation of about:blank windows when cookies policy set to "Keep until: I close Firefox"
Revert "Resource leak fix."

This reverts commit 866d72c9032cc30753c7471ad68dc76efc6199cd.
Fix build bustage for commit 90e5eff
Resource leak fix.

Prevent accumulation of about:blank windows in some situations.
Re-landing patch rebased on current context handling instead of script stacks.
Add Opus audio to WebM media decoder
Update VE splash, about: and about:logo branding
Move the classic downloads window pref to core preferences.
Revert newtab page preloading.
Update unofficial branding about:logo
Update about:logo text styling
Logopage part 1 - add logopage
Logopage part 2 - handle address bar display + focus