[8u] RFA 8187045: [linux] Not all libraries in the VM are linked with -z,noexecstack

[David Buck]

Hi!

Please approve this backport to 8u-dev

bug report:
https://bugs.openjdk.java.net/browse/JDK-8187045

JDK 10 changeset:
http://hg.openjdk.java.net/jdk10/master/rev/8b5ed0358b3a

JDK 10 review thread:
http://mail.openjdk.java.net/pipermail/build-dev/2017-September/019723.html

webrevs of JDK 8 backport:
http://cr.openjdk.java.net/~dbuck/8187045/

JDK 8 review thread:
http://mail.openjdk.java.net/pipermail/build-dev/2018-January/020612.html

JPRT hotspot testset run and passed. Manual run of testset included in 
changeset passed.

Cheers,
-Buck