am 8a8b0c6a: Merge "Include what you use: <errno.h>."

* commit '8a8b0c6af6ba45b549228ca4339277f18894f909':
  Include what you use: <errno.h>.
tree: c532e8cda2fb04d8cf5f8dcf287671cc2b68564a
  1. client/
  2. include/
  3. server/