[Android-tools-devel] 8.1.0 update

[Hans-Christoph Steiner]

So just went through updating some core android-tools packages to
8.1.0+r14.  Unfortuantely, there is too much work to do right now to get
it into Ubuntu/bionic, or at least for me to do by myself.  For example,
a new package, android-platform-external-boringssl, needs to be included.

Based on trying to port new code in android-platform-system-core, it
seems like it would be worth trying to build everything using the new
Android.bp files.  Also, I think they're building most of the SDK with
clang now, which is something we also might want to do.

.hc