This patch corrects the conformtest expectations for sys/wait.h for
XPG4. This does not change the test results for this header at the
makefile level since it fixes some spurious failures for this header
while introducing other failures previously hidden by incorrect
expectations. However, it shows up issues with stdlib.h for XPG4
defining W* names that are not permitted in this case (previously
wrongly allowed; the W* reservation is UX-shaded in XPG4.2 /
XSI-shaded in POSIX before 2008); that test is thus XFAILed.
Tested for x86_64.
* conform/data/sys/wait.h-data (WIFCONTINUED): Do not expect for
[XPG4].
(WEXITED): Likewise.
(WSTOPPED): Likewise.
(WCONTINUED): Likewise.
(WNOHANG): Likewise.
(WNOWAIT): Likewise.
(idtype_t): Likewise.
(P_ALL): Likewise.
(P_PID): Likewise.
(P_PGID): Likewise.
(id_t): Likewise.
(siginfo_t): Likewise.
(wait3): Likewise.
(waitid): Likewise.
(signal.h): Do not allow header for [XPG4].
(sys/resource.h): Likewise.
(si_*): Do not allow for [XPG4].
(W*): Likewise.
(P_*): Likewise.
(BUS_): Likewise.
(CLD_): Likewise.
(FPE_): Likewise.
(ILL_): Likewise.
(POLL_): Likewise.
(SEGV_): Likewise.
(SI_): Likewise.
(TRAP_): Likewise.
* conform/Makefile (test-xfail-XPG4/stdlib.h/conform): New
variable.
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