* include/experimental/any (any::_Storage): Make non-copyable.
(any::any): Do not copy _Storage object.
(any::operator=): Implement more efficiently than swapping.
(any::swap): Use new _Op_xfer operation.
(any::_Op::_Op_xfer): New enumerator.
(_Manager_internal::_S_alloc): Remove unused function.
(_Manager_internal::_S_create, _Manager_external::_S_create): Use out
parameter instead of returning a _Storage object.
(_Manager_internal::_S_manage, _Manager_external::_S_manage): Add
_Op_xfer operation for moving and swapping.
* testsuite/experimental/any/cons/nontrivial.cc: New.
* testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
From-SVN: r222721
9407c6fa53