This just replaces all the files with the 3.8.2 tarball contents and
restores the handful of android-specific files. It also updates the
METADATA file.

The (linux_glibc|linux_musl|darwin)-lib/... directories and Android.bp
file will be updated in a future set of changes.

Test: treehugger
Change-Id: I406c5d49edae31e412d1676ad69f9acd8a6ba8a6