Merge "Add METADATA." am: 8c1499921e am: dda1bf761e am: 5da4ef0d61 am: 17076e534d am: 17738d50c9

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

Change-Id: Ic7cffd1f13b598be37eabbabd67d74b0aa63a2c9