[v3 PATCH] Implement C++17 make_from_tuple.

[Jonathan Wakely]

On 14/08/16 21:27 +0300, Ville Voutilainen wrote:
>Here. Tested on Linux-x64. I made the test for the macro value compare
>it relatively rather than exactly;
>I don't think our tests should necessarily break just because a macro
>value is updated.
>
>2016-08-14  Ville Voutilainen  <ville.voutilainen@gmail.com>
>
>    Add a feature macro for C++17 make_from_tuple.
>    * include/std/tuple (__cpp_lib_make_from_tuple): New.
>    * testsuite/20_util/tuple/make_from_tuple/1.cc: Adjust.

OK, thanks.