[mp_file] minor modifications in mp_file_commit

Hi all,

In mp_file_commit function, it would be useful to add the new filename and the new filepath of the file after renaming and copying it:

<?php
function mp_file_commit($node, $file_path, $description, $title, $fid) {

[...]

  // Finally, copy the file to a more secure directory
  copy($file_path, $dir . $new_name);

  // Update node for further reuse
  $node->new_filename = $new_name;
  $node->new_filepath = $dir . $new_name;

[...]

}
?>

At least, it is useful to me...

Best regards.s
K.