altivec still broken?!

[Paolo Bonzini]

I actually found a bug that is solved in my implementation of comptypes. 
  It is a contrived example and it is in C++, but is indeed a bug.

1  template <class T> class X {
2  };
3
4  template <> class X<__ev64_opaque__> {
5  };
6
7  typedef int v2si __attribute__ ((vector_size (8)));
8
9  template <> class X<v2si> {
10 };

With my patch, this compiles.  With rth's proposed resolution
of comptypes for vector types, instead it gives a wrong error

/home/utente/aaa.c:9: error: redefinition of `class X<int __vector__>'
/home/utente/aaa.c:4: error: previous definition of `class X<int 
__vector__>'

Paolo