Merge "liblog: use unique log tags for is_loggable tests" am: d851b2ab am:...

Merge "liblog: use unique log tags for is_loggable tests" am: d851b2ab am: 51d1bb35 am: cbf354d2

Original change: https://android-review.googlesource.com/c/platform/system/core/+/1385942

Change-Id: I5c8a81a8ed6846231c7d0bb0135612e37ad3a0a4