A couple code updates can be made once the Mac build moves to SDK 10.10:
* JDK-7131356 uses the [NSProcessInfo operatingSystemVersion] function, but has to call it using msgSend in order to build with SDK 10.9. It would be preferable to call this directly once we're no longer building with SDK 10.9.
* JDK-8160370 added code to maintain compatibility for pre-MacOS 10.9 systems, which are no longer supported for JDK 9. Once JDK 9 has been released and test infrastructure has been updated, we should consider removing this code.