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

[jdk.internal.dynalink.beans.CallerSensitiveDynamicMethod Object java.security.AccessController.doPrivileged(PrivilegedAction)]
[jdk.internal.dynalink.beans.SimpleDynamicMethod String java.lang.String.valueOf(char)]