[8u-dev] RFA 8133666: OperatingSystemMXBean reports abnormally high machine CPU consumption on Linux

[david buck]

Hi!

Please approve this trivial backport from jdk9 to jdk8.

bug: https://bugs.openjdk.java.net/browse/JDK-8133666
jdk9 fix: http://hg.openjdk.java.net/jdk9/hs-rt/jdk/rev/d49f4e34e260
jdk9 review: 
http://mail.openjdk.java.net/pipermail/serviceability-dev/2015-August/017811.html

The patch applies cleanly after reshuffling. After applying the patch, I 
will also update the copyright header for this year.

Cheers,
-Buck