hg: jdk9/dev/langtools: 8160935: JShell: Without at least one source file 8160035 breaks build

[robert.field at oracle.com]

Changeset: 894273df1ba5
Author:    rfield
Date:      2016-07-07 00:10 -0700
URL:       http://hg.openjdk.java.net/jdk9/dev/langtools/rev/894273df1ba5

8160935: JShell: Without at least one source file 8160035 breaks build
Reviewed-by: jlahoda

+ src/jdk.jshell/share/classes/jdk/jshell/execution/Internal.java