Merge "Move from libbacktrace to libunwindstack." am: dec36238 am:...

Merge "Move from libbacktrace to libunwindstack." am: dec36238 am: ffd95c6e am: 63405a87 am: 20719231 am: 6c929833

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2046923



Change-Id: Ibe0fc4d522174407a52ccda5041d3bcd7d5d13c9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>