[jdk7u-osx] Please review fix for 7130704

[Jim Holmlund]

Here is the webrev
     http://cr.openjdk.java.net/~jjh/7130704/

Most of the changes were copied from the macosx-port/macosx-port/langtools repo.  The other changes 
are for the pleasure of jprt.

Testing:
    - langtools build and regression tests run by jprt on all platforms

Thanks
- jjh