Added the ability to clear an object from the global cache. This is rarely

needed (and can be potentially dangerous if the object depends on certain
startup methods to run and/or holds temporary attributes on themselves -
these will all be lost due to a new instance being created. It is hoever
necessary when it comes to renaming Exits - since the Command on the exit
must then change name too, recaching the Exit will also update the command.
Resolves issue 223.

src/commands/default/building.py

@@ -1015,6 +1015,9 @@ class CmdName(ObjManipCommand):
         if aliases:
             obj.aliases = aliases
             astring = " (%s)" % (", ".join(aliases))
+        # fix for exits - we need their exit-command to change name too
+        if obj.destination:
+            obj.flush_from_cache()
         caller.msg("Object's name changed to '%s'%s." % (newname, astring))