Merge "Add one visibility to libbz module" am: af1e6935ef am: 5439a186ba am: 38345d94b9 am: c70a30be1f

Original change: https://android-review.googlesource.com/c/platform/external/bzip2/+/1945434

Change-Id: Ia29a1ec69235441fa26da20642e3c6c9e6b71c09