8043277: Update jdk regression tests to extend the default security policy instead of override
Reviewed-by: alanb, mullan, chegar, sla

8043406: Change default policy for JCE providers to run with as few privileges as possible
Summary: Provide default permissions for crypto providers
Reviewed-by: mullan, vinnie

8040059: Change default policy for extensions to no permission
Reviewed-by: alanb, mullan, erikj