sub require_if_present
  {
    # So here is a trick for discovering if the module is 
    # available (and loading it if it is).  This function returns 
    # True if the module is there and this generally sets a 
    # flag to tell the rest of the program how to behave
    my($module_name,$loaded) = @_;    
    my($module_found);
    
    $module_found = 0;
    
    eval(<<"LoadModule");
        # Use require so we don't load the module if it is not there
        require $module_name;
        \$module_found = 1;
LoadModule

    return($module_found);
  }