conformtest: clean up POSIX expectations for termios.h, time.h.

Continuing the series of patches to clean up conformtest expectations
for "POSIX" (1995/6) based on review of the expectations against the
standard, this patch cleans up expectations for termios.h and time.h.
Tested x86_64; no new XFAILs needed.

	* conform/data/termios.h-data [POSIX] (IUCLC): Do not expect
	constant.
	[POSIX] (IXANY): Likewise.
	[POSIX] (OLCUC): Likewise.
	[POSIX || POSIX2008] (CBAUD): Do not allow.
	[POSIX || POSIX2008] (DEFECHO): Likewise.
	[POSIX || POSIX2008] (ECHOCTL): Likewise.
	[POSIX || POSIX2008] (ECHOKE): Likewise.
	[POSIX || POSIX2008] (ECHOPRT): Likewise.
	[POSIX || POSIX2008] (EXTA): Likewise.
	[POSIX || POSIX2008] (EXTB): Likewise.
	[POSIX || POSIX2008] (FLUSHO): Likewise.
	[POSIX || POSIX2008] (LOBLK): Likewise.
	[POSIX || POSIX2008] (PENDIN): Likewise.
	[POSIX || POSIX2008] (SWTCH): Likewise.
	[POSIX || POSIX2008] (VDISCARD): Likewise.
	[POSIX || POSIX2008] (VDSUSP): Likewise.
	[POSIX || POSIX2008] (VLNEXT): Likewise.
	[POSIX || POSIX2008] (VREPRINT): Likewise.
	[POSIX || POSIX2008] (VSTATUS): Likewise.
	[POSIX || POSIX2008] (VWERASE): Likewise.
	(B*): Change to B[0123456789]*.
	* conform/data/time.h-data [POSIX || UNIX98]
	(CLOCK_PROCESS_CPUTIME_ID): Do not expect constant.
	[POSIX || UNIX98] (CLOCK_THREAD_CPUTIME_ID): Likewise.
	[POSIX || UNIX98] (CLOCK_MONOTONIC): Likewise.
	[POSIX] (tm_*): Do not allow.
Remove special makefile rules / .sh files for some localedata tests.

The localedata tests tst-mbswcs and tst-wctype use custom .sh scripts
and makefile rules, but have no need to do so.  tst-mbswcs.sh runs a
series of test programs in succession (and nothing special is done
with the output of the programs); this patch makes the separate tests
into ordinary tests run directly by the usual makefile rules.
tst-wctype.sh runs one test with an environment variable and input
redirection; generic makefile rules also cover that, so again this
patch converts it into an ordinary test.  (The makefile dependency of
tst-wctype.out on sort-test.out that this patch removes appears to be
a cut-and-paste error; the test does not appear to use that file.
There is already a generic dependency of ordinary tests in this
directory on $(addprefix $(objpfx),$(CTYPE_FILES)).)

Tested x86_64.

localedata/ChangeLog:
	* Makefile (test-srcs): Remove tst-mbswcs1, tst-mbswcs2,
	tst-mbswcs3, tst-mbswcs4, tst-mbswcs5 and tst-wctype.
	(generated): Remove tst-mbswcs.out.
	(tests): Add tst-mbswcs1, tst-mbswcs2, tst-mbswcs3, tst-mbswcs4,
	tst-mbswcs5 and tst-wctype.
	(tests-special): Remove $(objpfx)tst-mbswcs.out and
	$(objpfx)tst-wctype.out.
	($(objpfx)tst-mbswcs.out): Remove rule.
	($(objpfx)tst-wctype.out): Likewise.
	(tst-wctype-ENV): New variable.
	* tst-mbswcs.sh: Remove file.
	* tst-wctype.sh: Likewise.
Start cleaning up TLS initial value for pthread_create.
ARM: Define TLS_DEFINE_INIT_TP
MIPS: Define TLS_DEFINE_INIT_TP
HPPA: Define TLS_DEFINE_INIT_TP
m68k: Define TLS_DEFINE_INIT_TP
SH: Define TLS_DEFINE_INIT_TP