[8u] RFA for JDK-6515172: Runtime.availableProcessors() ignores Linux taskset command and JDK-8165153: Crash in rebuild_cpu_to_node_map

[Shafi Ahmad]

Hi,

Please approve this backport of 
1. JDK-6515172: Runtime.availableProcessors() ignores Linux taskset command
2. JDK-8165153: Crash in rebuild_cpu_to_node_map
to 8u-dev.

I am sending single RFA because both the backport is tightly dependent. Please note that backport of JDK-8165153 is clean.

JDK-6515172:
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

JDK-8165153:
Jdk9 bug: https://bugs.openjdk.java.net/browse/JDK-8165153
Jdk9 changeset: http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/0fc5c6ca654e
Jdk9 review thread: http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2016-September/021025.html

Regards,
Shafi