[9] review request: 8157060: [Linux] sandboxed applications fail with AccessControlException

[Kevin Rushforth]

Jim, Chien, or Dave,

Please review:

https://bugs.openjdk.java.net/browse/JDK-8157060
http://cr.openjdk.java.net/~kcr/8157060/webrev.00/

Simple fix to use existing pattern to read system properties.

-- Kevin