Merge "Support for dexopt postprocessing in merge_target_files." am:...

Merge "Support for dexopt postprocessing in merge_target_files." am: 81005b13 am: 7386f15f am: 3f51d7ec am: a3e73313

Original change: https://android-review.googlesource.com/c/platform/build/+/1774125

Change-Id: I718efa9d487f513440d34128bde28f1399545274