code: def findAllCfgTasksUnderDir(aDir):
      
      retval = {}
      for f in irafutils.rglob(aDir, '*.cfg'):
          retval[f] = getEmbeddedKeyVal(f, TASK_NAME_KEY, '')
      return retval
docs: Finds all installed tasks by examining any .cfg files found on disk
          at and under the given directory, as an installation might be.
          This returns a dict of { file name : task name }