[8u] RFA for JDK-6515172: Runtime.availableProcessors() ignores Linux taskset command

[Shafi Ahmad]

Hi,

Please approve this backport of ' JDK-6515172: Runtime.availableProcessors() ignores Linux taskset command' to 8u-dev.

Jdk9 bug: https://bugs.openjdk.java.net/browse/JDK-6515172
Webrev: http://cr.openjdk.java.net/~shshahma/8154324/webrev.02/
Jdk8 review link: http://mail.openjdk.java.net/pipermail/hotspot-dev/2016-September/024540.html
Jdk9 review thread: http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2016-January/017692.html

Regards,
Shafi