libstdc++: Make allocators throw bad_array_new_length on overflow [LWG 3190]

libstdc++: Make allocators throw bad_array_new_length on overflow [LWG 3190]

std::allocator and std::pmr::polymorphic_allocator should throw
std::bad_array_new_length from their allocate member functions if the
number of bytes required cannot be represented in std::size_t.

libstdc++-v3/ChangeLog:

	* config/abi/pre/gnu.ver: Add new symbol.
	* include/bits/functexcept.h (__throw_bad_array_new_length):
	Declare new function.
	* include/ext/malloc_allocator.h (malloc_allocator::allocate):
	Throw bad_array_new_length for impossible sizes (LWG 3190).
	* include/ext/new_allocator.h (new_allocator::allocate):
	Likewise.
	* include/std/memory_resource (polymorphic_allocator::allocate)
	(polymorphic_allocator::allocate_object): Use new function,
	__throw_bad_array_new_length.
	* src/c++11/functexcept.cc (__throw_bad_array_new_length):
	Define.
	* testsuite/20_util/allocator/lwg3190.cc: New test.