tdf#134901: update print statistics on PDF export

From a modern point of view,
a PDF export could be considered a print event.

If one agrees with that point of view,
then updating the print statistics whenever a PDF is generated
makes sense.

That is what the bug report requested, and what this patch does.
That is what MS Word does also.

Downsides:
-there is no setting for a user to disagree with this bug's POV.
-doesn't work for Send - Email a PDF
-open a doc: export to PDF: close -> "Do you want to save changes?"
-I tested on --headless --convert-to pdf -> no problems
-a setting does exist to avoid modified status by printing.
-that setting defaults to avoid modifying the status - YAY!
-the print date is changed even if the export fails
-NEEDS to be changed before export: time needed in PDF itself
-didn't seem important enough to waste the time coding it.
-for real printers the old print date is restored on failure.

Change-Id: I0d1387c1c2c925f3be772c5bdad7187f9f6a4d7c
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/151682
Reviewed-by: Justin Luth <jluth@mail.com>
Tested-by: Jenkins
Tested-by: Justin Luth <jluth@mail.com>

0 files changed, 0 insertions, 0 deletions