RFR: 8009280: JCE jurisdiction policy files not copied into jdk/lib/security

[Erik Joelsson]

With this patch the security tests will again be runnable on the 
exploded jdk image. The main changes are:

* The security classes are compiled separately to a different output 
directory.
* The security jars are created in the jdk target (instead of images) 
and put in the jdk/lib/... directories.

Also did:
* Removed now redundant entries in rt.jar exclude list
* Changed source location for signing unsigned jars
* Made the SetupJavaCompilation macro more friendly with multiple setups 
sharing output directories.

http://cr.openjdk.java.net/~erikj/8009280/webrev.jdk.01/
http://cr.openjdk.java.net/~erikj/8009280/webrev.root.01/

/Erik