hg: jdk9/sandbox/langtools: Merge

[roger.riggs at oracle.com]

Changeset: 2ca1827da02f
Author:    rriggs
Date:      2015-04-06 13:24 -0400
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/2ca1827da02f

Merge

- src/java.base/share/classes/jdk/Exported.java