testing jigsaw builds

[Mandy Chung]

Mark Reinhold wrote:
>> Date: Mon, 15 Mar 2010 16:55:14 -0700
>> From: jonathan.gibbons at sun.com
>>     
>
>   
>> getSystemJavaCompiler() will only look in tools.jar if the classes are not
>> already available in the existing classloader.  If you're running a jdk module
>> image, does that not have the javac classes available?
>>     
>
> Yes, if the the module containing javax.tools.ToolProvider (i.e.,
> sun.langtools) is declared to have an optional dependence upon the
> javac module, and the javac module is installed.
>
>   
Jon,
   If you want to experiment this, you can edit the generated 
module-info.java file for now ($outputdir/tmp/modules/src).

I'll update the classanalyzer to support the optional dependence 
declaration.

Mandy