hg: amber/amber: More validation in XxxRef; more XxxRef tests

[brian.goetz at oracle.com]

Changeset: 468a3b229fa0
Author:    briangoetz
Date:      2018-01-18 14:39 -0500
URL:       http://hg.openjdk.java.net/amber/amber/rev/468a3b229fa0

More validation in XxxRef; more XxxRef tests

! src/java.base/share/classes/java/lang/sym/MethodHandleRef.java
! src/java.base/share/classes/java/lang/sym/MethodTypeRef.java
! test/jdk/java/lang/sym/IntrinsifiedRefTest.java
! test/jdk/java/lang/sym/MethodHandleRefTest.java
! test/jdk/java/lang/sym/MethodTypeRefTest.java