hg: jdk9/sandbox/jdk: 8155756: Better context for some jlink exceptions

[chris.hegarty at oracle.com]

Changeset: 762dad364838
Author:    jlaskey
Date:      2016-11-07 14:36 -0400
URL:       http://hg.openjdk.java.net/jdk9/sandbox/jdk/rev/762dad364838

8155756: Better context for some jlink exceptions
Reviewed-by: mchung

! src/jdk.jlink/share/classes/jdk/tools/jlink/internal/DirArchive.java
! src/jdk.jlink/share/classes/jdk/tools/jlink/internal/TaskHelper.java
! src/jdk.jlink/share/classes/jdk/tools/jlink/resources/jlink.properties