Some things to fix

[Robert Fraser]

Ary Borenszweig wrote:
> 2. modifiers that don't make sense should be disallowed.

There's been wars about this one. IMO, this is a good thing for writing 
templated/generic code -- if a modifier only makes sense in one instance 
of a template, all the others should not be marked as errors.

I think _conflicting_ modifiers should be made an error, i.e. "public 
private int x;".