8034812: remove IDX_INIT macro hack in Node class Summary: The IDX_INIT macro used by Node::Node(...) to retrieve the Compile object is removed and replaced by a call to Compile::current(). The Node constructor, new operator and all calls to it are adapted accordingly. Reviewed-by: kvn, jrose, iveresov, goetz

R1.run() invoked
R2.run() invoked
r3.run() invoked
r1.class !== r2.class: true
r2.class !== r3.class: true
Got exception: java.lang.UnsupportedOperationException
Got exception: java.lang.UnsupportedOperationException
(new ExtendsList).size() = 0
(new (Java.extend(ExtendsList)){}).size() = 0