Description of problem:
crond does not detect changes to /etc/localtime.  That is, should one's timezone
dst change and require upgrade of tzdata, crond continues on as if nothing has
changes.  crond needs to be restarted.

Version-Release number of selected component (if applicable):
vixie-cron-4.2-3.fc8

How reproducible:
Always

Steps to Reproduce:
1. change local timezone rules for daylight-saving-time eg by upgrading tzdata rpm
  
Actual results:
crond continues as though nothing has changed

Expected results:
crond should check whether /etc/localtime timestamp has changed


Additional info: