Bug 9656: Make logging to a file optional (for fines)

Bug 9656: Make logging to a file optional (for fines)

To test:
1/ Before the patch run misc/cronjobs/fines.pl
   Notice that a file has been written to /tmp

2/ rm the file

3/ Apply the patch and run the script again
   Notice the file is not created

4/ run the script with -l
   Notice the file is created again

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Comment: Now it work as described. No errors.
Signed-off-by: Elliott Davis <elliott@bywatersolions.com>
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>