[7u4] Request for approval for CR 7122752 - Add Darwin (macosx) to regression test scripts

[Michael McMahon]

This is a request to push a changeset to 
http://closedjdk.us.oracle.com/jdk7u/jdk7u-osx-gate/jdk/test/closed

It comprises a number of test script changes to work on Macos.
CR: http://monaco.us.oracle.com/detail.jsf?cr=7122752

Webrev: http://howth.ie.oracle.com/~mimcmah/webrev/current/7122752/1/

reviewed by: alanb

Thanks,
Michael