viced: time_t might not be long

Fix a couple of printf format errors that bite on FreeBSD 10 for i386.
Since time_t might be an int, it can't be printed with a long format.
Since time_t might be a long in general, cast to it to long when
printing.

Reviewed-on: http://gerrit.openafs.org/11385
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Reviewed-by: Jeffrey Altman <jaltman@your-file-system.com>
(cherry picked from commit 9dd67783bb2bd9ef8a972a1aac47b1925069a655)

Change-Id: Icda432863a36169857a20300ab936a1a72de7891
Reviewed-on: http://gerrit.openafs.org/11404
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Chas Williams - CONTRACTOR <chas@cmf.nrl.navy.mil>
Reviewed-by: D Brashear <shadow@your-file-system.com>
Reviewed-by: Andrew Deason <adeason@sinenomine.net>
Reviewed-by: Stephan Wiesand <stephan.wiesand@desy.de>