YUV-format image scaling and conversion library

The source in this directory was copied from upstream by running the
update.py script from media/libyuv. Any changes made relative to upstream
should be reflected in that script, e.g. by applying patch files after the
copy step.

The upstream repository is https://chromium.googlesource.com/libyuv/libyuv
Updates before this file was added were done manually; the last import was
r1602 (svn).

The git commit ID last used to import was 98a0a157dcf5dee0882b2dfcc9578ab1f44afb12 (2018-03-02 19:09:38)