tools/*: Use python3 instead of python

kokoro: Fix/rename job configs

kokoro/ndk-build: Add scripts to test multiple ABIS

kokoro/ndk-build: mark all repos as safe for modification

Update kokoro/android/build-docker.sh

Convert Kokoro Android CMake build to Docker

Fix building for Android CMake toolchain

convert NDK build to docker build, and use NDK r29 (#1104)

Support VK_EXT_shader_long_vector when Vulkan headers have it (#1103)

Adding shader long vector feature (#1100)

Amber test case memory model and zero init (#1101)

Add zero init memory feature to amber (#1099)

Adding Vulkan memory model feature (#1098)

Incorrect host access masks in pipeline barriers (#1097)

kokoro: remove VS 2019 configurations (#1096)