Script fixes and improvements.

Fix to mark all versions REL.

More robust patch application. Keep getting these build breakages, not sure why. Looks like git is
confusing one folder for the other?
https://android-build.googleplex.com/builds/submitted/10065142/test_suites_arm64/latest/logs/build_error.log

Bug: 275409981
Test: run locally
Change-Id: I6173b9ecae5e9ab12d9abf2eee3f2136dc353210