Setting new billing date by hand results in an error with python2.4

[gleb@…]

I think strptime has a different location in 2.5 vs 2.4. I'm using centos 5 and python24

File "/usr/lib/python2.4/site-packages/Trac-0.12.3-py2.4.egg/trac/web/main.py", line 522, in _dispatch_request
  dispatcher.dispatch(req)
File "/usr/lib/python2.4/site-packages/Trac-0.12.3-py2.4.egg/trac/web/main.py", line 243, in dispatch
  resp = chosen_handler.process_request(req)
File "build/bdist.linux-i686/egg/timingandestimationplugin/webui.py", line 119, in process_request
  self.set_bill_date(req.authname, req.args.get('newbilltime'))
File "build/bdist.linux-i686/egg/timingandestimationplugin/webui.py", line 63, in set_bill_date
  when = parsetime(when, now.tzinfo)
File "build/bdist.linux-i686/egg/timingandestimationplugin/webui.py", line 49, in parsetime
  try: return datetime.datetime.strptime(val, f).replace(tzinfo=tzinfo)