std::vector default default and move constructors

[François Dumont]

Hi

     Is it time now to consider this patch ?

     * include/bits/stl_vector.h
     (_Vector_impl_data): New.
     (_Vector_impl): Inherit from latter.
     (_Vertor_impl(_Vector_impl&&, _Tp_alloc_type&&)): New.
     (_Vector_base(_Vector_base&&, const allocator_type&)): Use latter.
     (_Vector_base()): Default.
     (_Vector_base(size_t)): Delete.
     (_Vector_base(_Tp_alloc_type&&)): Delete.
     (_Vector_base(_Vector_base&&)): Default.
     (vector()): Default.
     (vector(vector&&, const allocator_type&, true_type)): New.
     (vector(vector&&, const allocator_type&, false_type)): New.
     (vector(vector&&, const allocator_type&)): Use latters.

Tested under linux x86_64.

François


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