Merge "Add METADATA." am: 8c1499921e am: dda1bf761e am: 5da4ef0d61 am: 17076e534d

Original change: https://android-review.googlesource.com/c/platform/external/xz-embedded/+/1844021

Change-Id: I77326695da5f90ffa114bd09325f909e75025984