Update AArch64 assembly string routines from:
https://github.com/ARM-software/optimized-routines
commit 0cf84f26b6b8dcad8287fe30a4dcc1fdabd06560
Author: Sebastian Huber <sebastian.huber@embedded-brains.de>
Date: Thu Jul 27 17:14:57 2023 +0200
string: Fix corrupt GNU_PROPERTY_TYPE (5) size
For ELF32 the notes alignment is 4 and not 8.
Add license and copyright information to COPYING.NEWLIB as entry (56).
Sebastian Huber