Merge "Move b from a shell function to a shell script at build/bazel/bin/b"...

Merge "Move b from a shell function to a shell script at build/bazel/bin/b" am: 5319beb7 am: 4b9dbe8f

Original change: https://android-review.googlesource.com/c/platform/build/+/2266399



Change-Id: I07a2a99d99d17824abba406c1bd33afcd4ad7c54
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>