alloc_traits.h (__allocator_always_compares_equal): New trait, provide partial specializations for known allocators.
2011-07-09 Jonathan Wakely <jwakely.gcc@gmail.com>
* include/ext/alloc_traits.h (__allocator_always_compares_equal): New
trait, provide partial specializations for known allocators.
(__alloc_traits::construct, __alloc_traits::destroy): Overload for
non-standard pointer types.
(__alloc_traits::_S_always_equal): New trait for use with noexcept.
(__alloc_traits::_S_nothrow_move): Likewise.
(__alloc_traits::_S_nothrow_swap): Likewise.
From-SVN: r176077
