Please review fix for 6951599 (Rename package of security tools for modularization)

[Mandy Chung]

I revised the fix to rename the package of keytool instead of 
jarsigner.  Apparently, there are customers who depend on the jarsigner 
class.

Webrev at:
   http://cr.openjdk.java.net/~mchung/6951599/webrev.01/

I also updated the copyright year (thanks Brad for pointing that out).

Thanks
Mandy

Mandy Chung wrote:
> Hi,
>
> Please review the fix for:
>    6951599: Rename package of security tools for modularization
>
> Webrev:
>   http://cr.openjdk.java.net/~mchung/6951599/webrev.00/
>
> Move KeyTool, PolicyTool and JarSigner classes to its own package so 
> that the classes can be placed in its own module while eliminating the 
> split package (that requires such modules be locally connected and 
> loaded by the same class loader).
>
> Thanks
> Mandy
>