RFR (XL): 8139170: JVMCI refresh

Tue Oct 13 02:19:26 UTC 2015

https://bugs.openjdk.java.net/browse/JDK-8139170
http://cr.openjdk.java.net/~twisti/8139170/webrev/

During the review period for JEP 243 there were some changes and enhancements to the JVMCI code done by Oracle Labs. In order to not disturb the already long and complicated review of JEP 243 we decided to do a refresh after the initial integration.

A lot of the Java changes is switching to using explicit imports.