Merge "Remove checks for _USING_LIBCXX"
am: 467ceb4b7d

Change-Id: I91c37cee2a300d4fafcc12dbed290077315e8619
tree: d4143d7408b50b73315aab6f385ccac17afcea28
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/