Bug 10361: Add option to cleanup_database.pl to purge OPAC search history

Bug 10361: Add option to cleanup_database.pl to purge OPAC search history

Add an option to cleanup_database.pl to purge the search_history
entries older than X days.

Test plan:

- Apply patch
- Check that your test DB has some entries a little older than 30 days
  and a few ones even older than that in search_history:

  SELECT * FROM search_history WHERE time < DATE_SUB( NOW(), INTERVAL 30 DAY );

  If not, modify some existing entries.

- Run cleanup_database with a fixed number of days (replace XX with
  something higher than 30)

  /misc/cronjobs/cleanup_database.pl --searchhistory XX

- Check that entries older than XX days got deleted from search_history
- Run without the day parameter
  /misc/cronjobs/cleanup_database.pl --searchhistory
- Check that entries older than 30 days got deleted from search_history

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>