Android updates for Python 3.10

* Get clang version from soong during android/regen.sh
* Update Android.bp with setup.py and Makefile.pre.in changes
* Update android/Setup.local with setup.py changes
* Move manual musl changes to regen.sh
* 3.9 -> 3.10 where needed
* Drop support for macOS <10.13 for Soong builds, and <10.14 for Kokoro
  builds. Studio requires 10.14, but we still provide Soong-built
  binaries for 10.13 buildbots (b/191879468)
* Track windows vcxproj changes from
  https://github.com/python/cpython/commit/f3289a50503ed1a809d77fb03744bdcc7b9f1093

Change-Id: I797d69f18c32267f075b7a1d7559fc961a7395b5
5 files changed