Sorts the print spooler files so the most recent are at the top

The display of print spool files is normally sorted by spool file number. So when the spool file numbers wrap around from 9999 back to 0001, the most recent files are no longer at the top of the list.  Although it's possible to sort on date by clicking on the column header, it has to be done every time; and the files for a particular day are in random order.

This simple modification ensures that the spool files are sorted by date and time, with the most recent at the top.

Note: this modification requires "scripting enabled".