Replace README_MOZILLA with moz.yaml, various fixups for update.py, and create
a missing patch file from Bug 1491848.
Differential Revision: https://phabricator.services.mozilla.com/D11891
--HG--
extra : moz-landing-system : lando
The NEON codepaths could work, but they'd have to be converted to
MSVC-friendly assembly (or separate .asm files) first. Just disable
building them for now.
SSE2 isn't enabled by default on BSD x86 systems which ends up disabling
SIMD-optimized routines in libyuv. As Clang can build the code fine without
-msse limit the requirement to GCC.
https://github.com/llvm-mirror/clang/blob/6fc97e7c1cf4/lib/Driver/ToolChains/Arch/X86.cpp#L98
MozReview-Commit-ID: BaVAbEpkoHj
--HG--
extra : rebase_source : d32d55c09f34ad2d8d9e0d275167b576c9070e65
