* All files with FSF copyright notices: Update copyright dates
	using scripts/update-copyrights.
	* locale/programs/charmap-kw.h: Regenerated.
	* locale/programs/locfile-kw.h: Likewise.

	* All files with FSF copyright notices: Update copyright dates
	using scripts/update-copyrights.
	* locale/programs/charmap-kw.h: Regenerated.
	* locale/programs/locfile-kw.h: Likewise.

Problem reported by Florian Weimer [1] and solution suggested by
Andreas Schwab [2].  It also set the same buffer size independent
of architecture max_align_t size.

Checked on x86_64-linux-gnu and i686-linux-gnu.

	* lib/malloc/scratch_buffer.h (struct scratch_buffer):
	Use an union instead of a max_align_t array for __space,
	so that __space is the same size on all platforms.
	* malloc/scratch_buffer_grow_preserve.c
	(__libc_scratch_buffer_grow_preserve): Likewise.

[1] https://sourceware.org/ml/libc-alpha/2017-09/msg00693.html
[2] https://sourceware.org/ml/libc-alpha/2017-09/msg00695.html

These will be used from NSS modules, so they have to be exported.