8229280: Test failures on several linux hosts after JDK-8181493

[Brian Burkhalter]

> On Aug 28, 2019, at 2:16 AM, Alan Bateman <Alan.Bateman at oracle.com> wrote:
> 
> On 26/08/2019 19:45, Brian Burkhalter wrote:
>> Ping ...
> Can this test be changed to call UnixNativeDispatcher.futimensSupported reflectively? I think that would eliminate the most of the complexity and retry in this test.

Done [1]. Note however that futimens() can be supported without it actually being able to set the timestamps to nanosecond precision, e.g., for HFS file systems on macOS. Therefore the test will still pass if the actual and expected values are not equal due to truncation of a multiple of three digits of precision.

Thanks,

Brian

[1] http://cr.openjdk.java.net/~bpb/8229280/webrev.01/
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