hg: jigsaw/jake/jdk: Improve warnings for invalid module names at jlink/run time

[alan.bateman at oracle.com]

Changeset: d9e238be50b9
Author:    alanb
Date:      2016-12-14 19:25 +0000
URL:       http://hg.openjdk.java.net/jigsaw/jake/jdk/rev/d9e238be50b9

Improve warnings for invalid module names at jlink/run time

! src/java.base/share/classes/jdk/internal/module/Checks.java
! src/java.base/share/classes/jdk/internal/module/ModuleBootstrap.java
! src/jdk.jlink/share/classes/jdk/tools/jlink/internal/JlinkTask.java