r261604 - in /trunk/libstdc++-v3: ChangeLog inc...

[redi@gcc.gnu.org]

Author: redi
Date: Thu Jun 14 19:02:40 2018
New Revision: 261604

URL: https://gcc.gnu.org/viewcvs?rev=261604&root=gcc&view=rev
Log:
Partially revert move of std::tuple_element_t to <tuple>

Defining std::tuple_element_t in <utility> makes it available wherever
std::tuple_element is available.

	* include/std/tuple (__cpp_lib_tuple_element_t, tuple_element_t):
	Move back to <utility>.
	* include/std/utility (__cpp_lib_tuple_element_t. tuple_element_t):
	Restore to here.

Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/std/tuple
    trunk/libstdc++-v3/include/std/utility