hg: jdk9/sandbox/langtools: 8139832: JShell API: Diag constructor should not be exposed and fix typo

[chris.hegarty at oracle.com]

Changeset: ceb435d36186
Author:    rfield
Date:      2016-05-02 08:54 -0700
URL:       http://hg.openjdk.java.net/jdk9/sandbox/langtools/rev/ceb435d36186

8139832: JShell API: Diag constructor should not be exposed and fix typo
Reviewed-by: jlahoda

! src/jdk.jshell/share/classes/jdk/jshell/Diag.java