[committed] allow assert in inner class

[Andrew Haley]

Per Bothner writes:
 > If you use assert, the compiler generates some code
 > that includes doing THIS_CLASS.class, which in turn
 > is implemented by a static helper method named class$.
 > If THIS_CLASS was an inner class, the compiler would
 > lose because static methods aren't allowed in inner classes.
 > The solution (which matches JDK) is to move the class$
 > helper method to the outer class.
 > 
 > Tested on Fedora and checked into mainline.

Thanks.  3.4 too?  Or is this not sufficiently important?

Andrew.