PR libstdc++/58764 (again)

	PR libstdc++/58764 (again)
	* include/bits/stl_list.h (list): Make default constructor's exception
	specification conditional.
	* include/bits/stl_vector.h (vector): Likewise.
	* testsuite/util/testsuite_allocator.h (SimpleAllocator): Add noexcept
	to default constructor.
	* testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
	Adjust dg-error line number.
	* testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
	Likewise.
	* testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
	Likewise.
	* testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
	Likewise.
	* testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
	Likewise.
	* testsuite/23_containers/vector/requirements/dr438/
	constructor_1_neg.cc: Likewise.
	* testsuite/23_containers/vector/requirements/dr438/
	constructor_2_neg.cc: Likewise.
	* testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
	Likewise.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@206946 138bc75d-0d04-0410-961f-82ee72b054a4