RFR: 8012261: update policytool to support java.net.HttpURLPermission

[Weijun Wang]

Hi All

Please take a look at

     http://cr.openjdk.java.net/~weijun/8012261/webrev.00/

which supports the new HttpURLPermission type introduced in

     8010464: Evolve java networking same origin policy
     http://hg.openjdk.java.net/jdk8/tl/jdk/rev/93a268759ec3

Noreg-trivial.

Thanks
Max