Merge changes I09758f33,Ib8cb905c into cuttlefish-testing

* changes:
  tcp_socket: send() with MSG_NOSIGNAL
  Moves create message functions into tcp library
tree: b7addda2efb279f42a3c90c9060262e0dbedaf54
  1. common/
  2. guest/
  3. host/
  4. tests/
  5. tools/
  6. Android.bp
  7. Android.mk
  8. OWNERS