hg: jdk/submit: 8225532: Update source enums to describe 12 and 13 language features

[joe.darcy at oracle.com]

Changeset: 040e1c6dab96
Author:    darcy
Date:      2019-06-10 15:53 -0700
URL:       http://hg.openjdk.java.net/jdk/submit/rev/040e1c6dab96

8225532: Update source enums to describe 12 and 13 language features
Reviewed-by: jjg

! src/java.compiler/share/classes/javax/lang/model/SourceVersion.java
! src/jdk.compiler/share/classes/com/sun/tools/javac/code/Source.java