tree 75948389063538bb8a9aaf25e102978ca9217cac
parent bb22fc1a276121b1c05ae902016068fe0d4cb6b9
author Andy Heninger <andy.heninger@gmail.com> 1557530601 -0700
committer Andy Heninger <andy.heninger@gmail.com> 1558729499 -0700

ICU-20588 UMutex, add cleanup of underlying mutexes, and simplify usage model