wd-19 indeterminate policy target handling

I withdraw my objection to the Section 7 changes made by Erik in the 3.0
core spec wd-19.

I'm still concerned that the policy evaluation specification (in section
7) may cause unexpected variations in the results from two seemingly
"equivalent" policies, but I need to produce some theoretical or
empirical evidence to demonstrate this (or to relieve my concern).  In
any case, the wd-19 changes probably do not make this any better or
worse.

Regards,
--Paul