re PR libstdc++/60497 (unique_ptr<T> tries to complete its type T even though it's not required to be a complete type)

	PR libstdc++/60497
	* include/debug/array (get): Qualify call to other get overload.
	* include/profile/array (get): Likewise.
	* include/std/array (get): Likewise.
	* include/std/functional (_Mu, _Bind, _Bind_result): Qualify std::get.
	* include/std/mutex (unique_lock, call_once): Use __addressof.
	(__unlock_impl): Remove unused template.
	(__try_to_lock): Declare inline.
	(__try_lock_impl::__do_try_lock): Qualify function calls.
	(lock): Avoid narrowing conversion.
	* testsuite/20_util/bind/60497.cc: New.
	* testsuite/23_containers/array/element_access/60497.cc: New.
	* testsuite/30_threads/call_once/60497.cc: New.
	* testsuite/30_threads/unique_lock/cons/60497.cc: New.

From-SVN: r210388