Spell changes

Date:Sat Feb 8 08:28:02 2003
A few changes:

- Earthquake will no longer be felt in an entire zone. Instead, the effects
  will propagate somewhat like a "yell", with different messages being given
  according to distance and intensity.

- Area-effects, like portal, darkness and watch room, and door-effects,
  like block/break/bash door, have been detickified: they can expire at any

- If you know detect magic well, you will be able to sense if there is a
  portal leading to your current location. If you know detect magic very
  well, you will also get a "locate" key to the other end of the portal.