[crossfire] Time delay in maps

[Kevin Zheng]

> Hi Kevin,
> 
> It has been a l-o-n-g time since I mapped for Crossfire. I do recall doing
> something with timers, though I do not recall the details. Look through the
> maps I created and check them for timers. You may find what you want in
> one of them.
> 
> Gene Alexander

I'm managed to figure out how to get timers working with Python and the
EVENT_TIMER archetype. Thanks for your help, though!

Thanks,
Kevin Zheng