def get_all( line )
      retval = nil
      m = /^\s*;\s*all_parts\s*(.+)[^\s]*/.match( line )
      if m && m[1]
        retval = m[1]
      end
      return retval
    end
def get_all( line )
      retval = nil
      m = /^\s*;\s*all_parts\s*(.+)[^\s]*/.match( line )
      if m && m[1]
        retval = m[1]
      end
      return retval
    end
Determines if the the line is an all_parts comment.
 Return the file name otherwise nil