liblog: add __android_log_close() am: b1b5d507cb am: f72c9bc42d am: 49d5582f29 am: 1b1b6a4889  -s ours am: 4eb04cb32b
am: 61b901a31d

Change-Id: Id5c9bbabf9039e0ba754723e851faf599ce70bdb