Radio Config: Removed commandQueueHasEmptied and related
Radio Config: timeout for AT commands

- if any one AT command in a batch takes
  longer than the timeout the rest of the
  items in the command batch perform just
  return and don't send any more commands.

- when command batch group finishes send
  the commandHadTimedOut variable in
  NSNotification userInfo dict

- removed old nsarray based queue varable