* include/bits/demangle.h: Fix allocator type correctness,
i.e. make sure that when we instantiate a container with a value
type and an allocator, the allocator's value type matches the
container's.
* include/bits/stl_deque.h (_Deque_alloc_base): Eliminate.
(_Deque_base): inherit directly from the deque's allocator. Use
rebinding instead of _Alloc_traits. Pick up data members from
_Deque_alloc_base.
* include/bits/stl_list.h (_List_alloc_base): Eliminate.
(_List_base): Inherit directly from the list's allocator. Use
rebinding instead of _Alloc_traits. Pick up data members from
_List_alloc_base.
* include/bits/stl_vector.h (_Vector_alloc_base): Eliminate
(_Vector_base): Inherit directly from the vector's allocator. Use
rebinding instead of _Alloc_traits. Pick up data members from
_Vector_alloc_base.
* include/ext/hashtable.h: Fix allocator type correctness (the
vector of buckets must be passed an allocator for objects of
type _Node*). Use rebinding instead of _Alloc_traits.
From-SVN: r74787
