[8u-dev] RFA 8130150: Implement BigInteger.montgomeryMultiply intrinsic

[Vladimir Kempik]

Hello

I'd like to port this fix into 8u-dev.

Implement BigInteger.montgomeryMultiply intrinsic

The patch has two parts, for jdk and hotspot.

Testing: jprt, testcase.

Bug:https://bugs.openjdk.java.net/browse/JDK-8130150
Webrev for hotspot:http://cr.openjdk.java.net/~vkempik/8130150/webrev_hs.01/
Webrev for jdk: http://cr.openjdk.java.net/~vkempik/8130150/webrev_jdk.00/
Review thread: http://mail.openjdk.java.net/pipermail/hotspot-compiler-dev/2016-February/021321.html

Thanks
-Vladimir