liblog: add __android_log_close() Bug: 30963384 (cherry picked from commit df7a4c6bae5f85532d79a93b7d9197a2aab17825) (cherry picked from commit c12d3d250ceb6a4380d2fcaf7f6d30bdea200dad) Change-Id: Id4313e99bf86b41c3713e1c2db0242d12aeb8bb7 (cherry picked from commit bd36696a16d3107c9e9503d120d7455dcbfd3fe6)