* Bootstrap now passes args all the way through
    * FrontEnding implemented which allows Ant to talk back out
      to whatever front end might be driving it. Events propogated
      are project start/end, target start/end, task start/end.
      This should allow any front end (like a GUI) to move a
      progress indicator through a display of the object tree.
      Also included is a generic writeMessage(String, int) method.
    * cli/Main now plays ClassLoader games so that it can auto
      matically place needed resources (like tools.jar) into
      the classpath space of the executing Ant. Note -- this
      is the first of a few steps to make complicated shell
      launch scripts unnecessary. All that should be done
      is a single executable per platform that essentially
      calls "java -jar anteater.jar [args]". Main is also
      primed for a future CJAN so that it can download whatever
      jars are needed from CJAN and place them into the classpath
      space of the executing Ant. Of course, it's not implemented
      yet since CJAN isn't around yet -- but its ready. :)
    * AntException now has fields for embedding the location
      of an Error. Next up will be implementing the code
      around where Tasks are run so that exceptions will contain
      this information.


git-svn-id: https://svn.apache.org/repos/asf/ant/core/trunk@268333 13f79535-47bb-0310-9956-ffa450edef68