[8u] RFR for backport of JDK-8169931: 8k class metaspace chunks misallocated from 4k chunk freelist

[Muthusamy Chinnathambi]

Hi,
		 
Please review the backport of bug: "JDK-8169931: 8k class metaspace chunks misallocated from 4k chunk freelist" to jdk8u-dev

Please note that this is not a clean backport due to new entries in jni.cpp.


Webrev:  http://cr.openjdk.java.net/~mchinnathamb/JDK-8169931/webrev.01/ 
jdk9 bug:  https://bugs.openjdk.java.net/browse/JDK-8169931 
Original patch pushed to jdk9:  http://hg.openjdk.java.net/jdk9/hs/hotspot/rev/8d26435a4c69 

Test:  Had run jtreg, jprt hotspot testset and with -XX:+ExecuteInternalVMTests.

Regards,
Muthusamy C