logd: filter on __android_log_is_loggable

(cherry pick from commit e59c469fa89d438d2d7150b7d8cd6b401900709b)

- Default level when not specified is ANDROID_LOG_VERBOSE
  which is inert.

Bug: 20416721
Bug: 19544788
Bug: 17760225
Change-Id: Icc098e53dc47ceaaeb24ec42eb6f61d6430ec2f6
2 files changed
tree: eb2dd6baeddc67f0f9acb6f94fd084c2edc39fd3
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/