Common V3 coding bug

[Mark Mitchell]

The new parser is fun because so far I've coded very little in the
way of language extensions.  That's partly because I hope to argue
about them before implementing them, and partly because it gives me a way 
of shaking out little bugs in V3. :-)

There are a bunch of places in the code where V3 does:

  template <class T> struct A {
    int i;
  };

  template <class T> struct B : public A<T> {
    void f() { i = 3; }
  };

This isn't valid C++; there's no `i' in scope in `B'.  You have
to add `using A<T>::i;' if you want to do this, or write `B<T>::i'. It's 
hard to catch this with G++, because the current parser doesn't complain
about this case, even with -pedantic.

I'm fixing up the cases I find on the cp-parser-branch.

(Yes, the new parser is doing something similar to two-phase name
lookup, so it gets this mostly right.)

FYI,

-- 
Mark Mitchell                mark@codesourcery.com
CodeSourcery, LLC            http://www.codesourcery.com