[7u4-osx] Request for approval for 7141071 : TEST_BUG: TEST_BUG: update shell scripts in java/nio/charset to detect Mac OS as a valid platform

[Kurchi Hazra]

This is a request to push the following fix to jdk7u-osx:

CR: http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=7141071

Webrev:http://cr.openjdk.java.net/~khazra/7141071/webrev.01/


Reviewed by: alanb

This changeset will be pushed on my behalf by Michael McMahon (michaelm).

Thanks,
Kurchi