Upgrade emulator to emu-master-dev build 3700138 am: 481f1f5b65 am: 8b4d20fc29 am: ae38d735c4
am: 5b98017e32

Change-Id: I73ea67432e70f0e9591de70f3d57f667ea59dae5
tree: fbcea5a0742160d5f1b52863fe0477fe0d7ba2a7
  1. .gitignore
  2. NOTICE
  3. README
  4. darwin-x86_64/
  5. linux-x86_64/
  6. update_emulator.sh