Merge changes Ib3354417,I400cf4cc

* changes:
  liblog: add log/log_read.h
  liblog: add log/log_time.h
tree: 4863d903c9d399b2e93a0eddc241210f9d5b751d
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/