it never amazes me when some new things crawls out of the windows

it never amazes me when some new things crawls out of the windows
spooler. :-(

When installing the Adobe PS driver onto a Samba printer via cupsaddsmb,
I noticed a WIN2k client sending DeletePrinterData("DependentFiles")
pver and over.  I also noticed that we never checked to see if the
value was valid.  No now we do and return WERR_BADFILE which I think
is correct.

Next, I noticed that we never wrote the updated printer out to disk
after a succesfully DeletePrinterData[Ex]().

Finally, I found a driver (Canon BJC 1000 using the Adobe PS drivers
and foomatic PPD file) that was destroying the device name string
in the devmode.  So now get_a_printer_2() always writes out the
device name in \\server\share form.

I think these changes might fix bug 294.
(This used to be commit deb25780874b66e68ac597db24fbc50e7f7458b5)