Eric Fiselier 03e29a2964 Implement C++17 tuple bits. Including apply and make_from_tuple.
This patch upgrades <tuple> to be C++17 compliant by implementing:

* tuple_size_v: This was forgotten when implementing the other _v traits.
* std::apply: This was added via LFTS v1 in p0220r1.
* std::make_from_tuple: This was added in p0209r2.

llvm-svn: 275745
2016-07-18 00:35:56 +00:00
..