[8u] RFR for backport of JDK-8148786: xml.transform fails on x86-64

[Shafi Ahmad]

Hi,
 
Please review the backport of bug: "JDK-8148786: xml.transform fails on x86-64" to jdk8u-dev
Please note that this is not a clean backport due to conflict in src/share/vm/opto/loopnode.hpp

Webrev: http://cr.openjdk.java.net/~shshahma/8148786/webrev.00/
Jdk9 bug: https://bugs.openjdk.java.net/browse/JDK-8148786
Original patch pushed to jdk9: http://hg.openjdk.java.net/jdk9/jdk9/hotspot/rev/db7934bcad3b

Test:  Run jprt -testset hotspot

Regards,
Shafi