* 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.

This extends tst-strtod-round with a few trivial changes
to also test the wide character variants of strto* using
similar macros to other shared tests.

Reduce much of the redundancy in this file, and attempt
to coral the type specific stuff to ease adding an new type.

This file is partially generated.  To make updates a little
simpler, I have moved the generated code into a partially
contained header to simplify regeneration.

gen-tst-strtod-round.c now takes two, mandatory arguments.
These arguments specify the input test data and the output
destination, respectively.

Bug 18247 is an off-by-one error in strtof's determination of a
decimal exponent such that any value with that decimal exponent is at
most half the least subnormal and so the appropriate underflowing
value for the rounding mode can be determined with no
multiple-precision computations.  (Whether the value is in fact safe
despite the off-by-one depends on the floating-point format in
question.  It's wrong for float and for m68k ldbl-96 but not for other
supported formats.)  This patch corrects the computation of the
exponent in question to be safe in general, adding a comment
explaining the new computation.

Tested for x86_64.

	[BZ #18247]
	* stdlib/strtod_l.c (____STRTOF_INTERNAL): Decrease minimum
	decimal exponent by 1.
	* stdlib/tst-strtod-round-data: Add more tests.
	* stdlib/tst-strtod-round.c (tests): Regenerated.

Due to tile missing a bunch of FP exception and rounding
support, the tests generate warnings.  These changes fix the
warnings by just not compiling some unused functions, and
adding some attribute ((unused)) tags.