RFR 9: 8169645 : ObjectInputFilter.Config spec is ambiguous regarding overriding the filter via System properties

[Roger Riggs]

Please review a clarification of the serialization filtering 
configuration of pattern based filters
requested and reviewed by the JCK team.

Webrev:
    http://cr.openjdk.java.net/~rriggs/webrev-filter-config-8169645/

Thanks, Roger