Merge "Add better jemalloc stat logging." into main am: b3d8fec0d0 am: a87ad0a1c6

Original change: https://android-review.googlesource.com/c/platform/bionic/+/3267916

Change-Id: Id52bedbb80dd7a4fc94ac95f6dca0e038b2d5da1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>