Modular JAR file support

[mark.reinhold at oracle.com]

2011/4/5 15:46 -0700, mandy.chung at oracle.com:
> I have a prototype to support a modular JAR file be installed on a module library.

Cool -- thanks!

> ...
> 
> For example, hello.jar and world.jar are modular JAR files and each
> contains module-info.class entry.  hello.jar also contains the manifest.
> 
> $ jar tvf hello.jar
>        0 Tue Apr 05 15:16:16 PDT 2011 META-INF/
>    130 Tue Apr 05 15:16:16 PDT 2011 META-INF/MANIFEST.MF
>   276 Tue Apr 05 15:16:14 PDT 2011 module-info.class
>       0 Tue Apr 05 15:16:14 PDT 2011 com/
>       0 Tue Apr 05 15:16:14 PDT 2011 com/greetings/
>   639 Tue Apr 05 15:16:14 PDT 2011 com/greetings/Hello.class

For clarity I think it'd be better to put module-info.class into the
META-INF directory, since that's where other metadata goes.  This will
help prevent any confusion about whether module-info.class is something
that one should try to load via Class.forName (which of course wouldn't
work anyway).

- Mark