hg: amber/amber: Tweak direct supertypes of enums to allow EnumSet/EnumMap to work with generic enums.

[maurizio.cimadamore at oracle.com]

Changeset: 40c2b160c3a4
Author:    mcimadamore
Date:      2018-12-05 19:05 +0000
URL:       http://hg.openjdk.java.net/amber/amber/rev/40c2b160c3a4

Tweak direct supertypes of enums to allow EnumSet/EnumMap to work with generic enums.
See also: http://cr.openjdk.java.net/~mcimadamore/amber/enhanced-enums.html

! src/jdk.compiler/share/classes/com/sun/tools/javac/code/Types.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Attr.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Check.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/comp/TypeEnter.java
+ test/langtools/tools/javac/enhanced_enums/RawEnumTest.java
+ test/langtools/tools/javac/enhanced_enums/RawEnumTest.out