Legendhome locations

As everyone knows, legendhomes are horribly abused for PK situations.

In order to fix that, legendhomes will not longer be allowed to:
  (a) be close to city gates, or 
  (b) have a locked exit out of them (latches are OK).

It will take a while to get this fixed for all current legend homes,
but we'll try to fix the more atrocious ones first.

- Dain