hg: jdk9/sandbox/langtools: Adding forgotten class

[jan.lahoda at oracle.com]

Changeset: 15c223d66981
Author:    jlahoda
Date:      2015-05-22 10:30 +0200
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/15c223d66981

Adding forgotten class

+ src/jdk.compiler/share/classes/com/sun/tools/javac/util/Iterators.java