Merge "logcat: Add -h and --help flags" am: 23e308398f am: ef7d2f9d97
am: 83f8d0b5c2

Change-Id: I3fe4e2d27f248bd6e5ed531c2f7602dfcb912460
tree: 7f7a1b7688e6842a185ce46af9a5296ddd58c3ab
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/