RFR: JDK-8226891: rename and re-layout jpackage tests.

Please review the jpackage fix for bug [1] at [2]. This is a fix for the JDK-8200758-branch branch of the open sandbox repository (jpackage). [1] https://bugs.openjdk.java.net/browse/JDK-8226891 [2] http://cr.openjdk.java.net/~herrick/8226891/

JPackage application image file system layout

While trying to update our application to the (ea-version of) jpackager I noticed that the executable files are now in a bin/ subdirectory, which will make the application update from javapackager a real pain. For Linux this can be argumented with the Filesystem Hierarchy Standard but under Window