[Samba] PDF Print command

[David Brodbeck]

One thing that always worries me about cron-job solutions is, how do you
know when the file is done being written?  I suppose the odds of the script
running exactly when someone's halfway through a file are low, but you can't
always count on it.  What if someone wants to convert a 20-megabyte file?
(Don't laugh; we've produced 1000-page manuals in PDF, resulting in
100-megabyte-plus PDF files, though so far not with the script I've written.
We already had a single license for Adobe Distiller for doing those.  My
script was mainly to avoid having to buy a copy for everyone who needed to
do occasional small PDFs.)