182p7

182p7
Minor changes:
  * nwho() now takes an optional viewer argument like lwho(). By Sketch.

Fixes:
  * Clarified the behavior of eval() and get_eval() in help. Suggested by
    Talvo and Javelin.
  * A failed db save no longer broadcasts a success message in additionto a
    failure one. Reported by Cooee.
  * The open database file wasn't getting closed on a failed save.
  * Crash bug in sortkey(). Fix by Nathan Baum.
  * 'help @desc' brings up @describe instead of @descformat.
    Suggested by Nymeria.
  * Removed mention of Win32 requiring a particular attribute
    compression algorithm. Any will work, and always have.
    Reported by Andrew Klein.
  * Crash bug in @purge. Javelin.