[security-dev 01400]: Review request for 6903638: Remove dependency on AuthPermission from SecurityConstants

[Mandy Chung]

Fixed 6903638: Remove dependency on AuthPermission from SecurityConstants
Webrev at:
  http://cr.openjdk.java.net/~mchung/6903638/webrev.00/

Move the two static fields defined in the SecurityConstants to 
javax.security.auth.Subject class.  javax.security.auth classes are not 
needed during boot.

Thanks
Mandy