am 8cf0d59f: adb: Add "adb disconnect" command for disconnecting TCP/IP devices.

Merge commit '8cf0d59f61ae0b8554ecf3fe051850508b761b79' into eclair-plus-aosp

* commit '8cf0d59f61ae0b8554ecf3fe051850508b761b79':
  adb: Add "adb disconnect" command for disconnecting TCP/IP devices.