RFR 8223349: [lworld] Reflection support on static <init> factory methods for inline types

[Roger Riggs]

Please review changes to java.lang.reflection for inline classes to 
support lookup and invocation
of constructors (static method <init>).

The  changes to MethodHandles.Lookup appear to already been done.

Jira:
    https://bugs.openjdk.java.net/browse/JDK-8223349

Webrev:
    http://cr.openjdk.java.net/~rriggs/webrev-init-8223349/index.html

Thanks, Roger