RFR 9 : 8160370 : System.getProperty("os.version") returns "Unknown" on Mac

[David DeHaven]

Fix looks good to me too.

-DrD-

> On Jun 29, 2016, at 12:54 PM, Gerard Ziemski <gerard.ziemski at oracle.com> wrote:
> 
> hi Brent,
> 
> Thank you for fixing the original issue and for putting in this follow-up fix!
> 
> Looks good! (for full disclosure I proposed the workaround)
> 
> 
> cheers
> 
>> On Jun 29, 2016, at 2:36 PM, Brent Christian <brent.christian at oracle.com> wrote:
>> 
>> Hi,
>> 
>> Please review the following change for JDK 9:
>> 
>> Bug:
>> https://bugs.openjdk.java.net/browse/JDK-8160370
>> Webrev:
>> http://cr.openjdk.java.net/~bchristi/8160370/webrev.00/
>> 
>> The fix for 7131356 fills in the "os.version" system property on Mac using [NSProcessInfo operatingSystemVersion], available starting in Mac OS 10.9.
>> 
>> While JDK 9 will not support versions of Mac OS prior to 10.9 [1], not all testing infrastructure has been updated, and we've seen failures of
>> 
>> java/lang/System/OsVersionTest.java
>> 
>> The code to restore behavior on older Mac systems is only a few lines, so that seems like a good way to get testing going again.
>> 
>> Thanks,
>> -Brent
>> 
>> 1. https://jdk9.java.net/jdk9_supported_platforms.html
>> 2. https://bugs.openjdk.java.net/browse/JDK-8156132
>