Workaround: Client-side fire bug.

When creative mode player tries to put out a fire without permission, it
APPEARS to succeed to that player, until he logs out and back in.  This
works around that by explicitly sending that player a block update for
the fire block, which really hasn't changed.
Added option to toggle PvP in admin subdivisions.
Better logging for failures to read claim data.
Version to 8.8