Merge "logcat: use stdio for free buffering." am: d07c55b6f7

Original change: https://android-review.googlesource.com/c/platform/system/logging/+/1894740

Change-Id: Ie1940f3bf989bd68bc06ba4c7dd8d5f30d5efa62
tree: a359afd7d67e17192ea93aa8390acd3614c8d572
  1. liblog/
  2. logcat/
  3. logd/
  4. logwrapper/
  5. rust/
  6. OWNERS
  7. PREUPLOAD.cfg
  8. TEST_MAPPING