RFR 8226395 : Test makes assumptions about what fields can be setAccessible

[Roger Riggs]

Please review a test change that checks that fields of inline all 
classes in the JDK itself
can not be setAccessible; matching the behavior of Field.setAccessible.

Webrev:
  http://cr.openjdk.java.net/~rriggs/webrev-set-field-accesible-8226395/

Thanks, Roger