Merge changes I61f696c7,I7263e599

* changes:
  Replace AutoFreeBuffer uses for SharedFD
  AutoFreeBuffer -> std::vector<char> for netlink
tree: ba7e614f4873779575486ef5c1783ea567bb41b4
  1. common/
  2. guest/
  3. host/
  4. tests/
  5. tools/
  6. Android.bp
  7. Android.mk
  8. OWNERS
  9. TEST_MAPPING