Merge changes I960c33e7,I256be1ee,I56cd01ac,Icb498d88,Ic8204f04

* changes:
  vndk-def: Automate the process to update list
  vndk-def: Add special cases for libclang_rt libs
  sourcedr: Extract load_manifest_from_args()
  sourcedr: Move run_tests.sh
  sourcedr: Reorganize ninja.py code