Review request: 7127874 Add handling of macosx env variables to ProcessBuilder regression test

[Jason Uh]

Hi,

Could I please get the following change reviewed?

http://cr.openjdk.java.net/~juh/7127874/webrev.00/ 
<http://cr.openjdk.java.net/%7Ejuh/7127874/webrev.00/>

This change to the test of ProcessBuilder adds handling of Mac OS and 
the environment
variables that it adds -- namely, __CF_USER_TEXT_ENCODING and 
JAVA_MAIN_CLASS_<pid>.

Thanks,
Jason