Update all of the tools provided with OpenDS to ensure that they are easier
to invoke programmatically.  This includes:

- Providing an alternate static method that returns an integer value and
  doesn't use System.exit

- Making sure that method provides the ability to control whether the server
  should be initialized (not necessary for all types of tools)

- Making sure that method provides the ability to specify alternate output and
  error streams.

OpenDS Issue Number:  987