hg: jdk9/sandbox/nashorn: Merge

[michael.x.mcmahon at oracle.com]

Changeset: ec450c26a7d4
Author:    michaelm
Date:      2015-09-01 15:56 +0100
URL:       http://hg.openjdk.java.net/jdk9/sandbox/nashorn/rev/ec450c26a7d4

Merge

- src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/AstSerializer.java