@run main/policy ignores system default java.policy

[Weijun Wang]

I know that a "@run main/policy=p" tag will be translated to 
-Djava.security.policy==p and the system default 
java.home/conf/security/java.policy will be ignored, and sometimes it's 
necessary to copy some lines from there to the test's own policy file.

However, with more modules being de-privileged, the system default 
java.policy is becoming much longer, this means it's more likely to 
duplicate lines there into a test policy file. Sometimes this is not 
obvious.

Is there a plan to allow the system default java.policy also be loaded? 
Maybe a new option name like "addpolicy"?

Thanks
Max