jake -> jdk9/dev

[Alan Bateman]

We have a number of changes accumulated in the jake forest that we need 
to bring to jdk9/dev soon.

The bulk of changes relate to #MoveModuleAndLayerClasses [1] and so a 
bit disruptive for those using the JDK 9 EA builds and the new APIs.

The revised proposed for #VersionsInModuleNames reverts a previous 
proposal so that digits are now preserved at the end of module names.

We also have a minor update to JVM TI to java.lang.instrument to allow 
for unmodifable modules. This is to fix the inconsistency with 
unmodifable classes. It is independent of the ongoing discussion about 
java agents and no impact to agents using the draft APIs.

That's all for now. The highest priority is to get the jlr.Module -> 
jl.Module move into jdk9/dev. As I mentioned in a mail last week, this 
requires a bit of coordination to meet up with the changes coming from 
the OpenJFX project.

-Alan

[1] 
http://openjdk.java.net/projects/jigsaw/spec/issues/#MoveModuleAndLayerClasses