Merge "Add a --copy-out flag for build.rs output files." am: 9dadd5899d am: 043d88799d am: e64b6aaecc am: 454ad22274

Original change: https://android-review.googlesource.com/c/platform/development/+/1473496

Change-Id: Icc9c59893a28ac6bc7827cd69c1b44ca7f2cb2aa