Initial proof of concept for implementation of -Xlint:hiddenclass

[Fredrik Öhrström]

2012/9/20 Remi Forax <forax at univ-mlv.fr>:
> I maybe wrong but the code proposed by Fredrik in ClassReader will flag all
> classes that are not issued from a .java file as auxiliary classes.
> At least, a class with a filename that doesn't end with '.java' should not
> be tagged as auxiliary.

I'll fix that.

//Fredrik