Log Message:
Update from version 0.854 to 0.85.4.

Pkgsrc changes:
 o Belatedly fix the version number tweak to forestall what would
   happen when/if this package upstream goes to 0.86, which is perfectly
   valid according to the perl version numbering rules, but which is
   problematical for pkgsrc's dewey-decimal system.

   Better to have the fix on the branch, even though this steps the
   version number backwards in pkgsrc-current.

Approved by agc@