am 129e9dad: Merge changes Idfd1a114,If725a1cb,I61211165,If9a05ccb

* commit '129e9dada707d66eb3242b666b6187a031dc410a':
  adb: turn on -Werror
  netcfg: turn on -Werror
  mkbootimg: turn on -Werror
  gpttool: turn on -Werror