Fix linknamespace expectations for in6addr_any, in6addr_loopback.

Some linknamespace test failures turned out to be because the
variables in6addr_any and in6addr_loopback weren't listed in the lists
of extra reserved symbols for the relevant standards (only functions
are handled automatically through -aux-info, data symbols need listing
manually in list-header-symbols.pl).  This patch duly adds those
symbols to those lists (there are still failures for older standards
because of references to those symbols being brought in for standards
that didn't reserve them: bug 18532, to be fixed separately).

Tested for x86_64.

	* conform/list-header-symbols.pl (%extra_syms): Add in6addr_any
	and in6addr_loopback for XOPEN2K, XOPEN2K8 and POSIX2008.
	* conform/Makefile (test-xfail-XOPEN2K/netdb.h/linknamespace):
	Remove variable.
	(test-xfail-POSIX2008/netdb.h/linknamespace): Likewise.
	(test-xfail-XOPEN2K8/netdb.h/linknamespace): Likewise.

ChangeLog

@@ -1,3 +1,12 @@
+2015-06-14  Joseph Myers  <joseph@codesourcery.com>
+
+	* conform/list-header-symbols.pl (%extra_syms): Add in6addr_any
+	and in6addr_loopback for XOPEN2K, XOPEN2K8 and POSIX2008.
+	* conform/Makefile (test-xfail-XOPEN2K/netdb.h/linknamespace):
+	Remove variable.
+	(test-xfail-POSIX2008/netdb.h/linknamespace): Likewise.
+	(test-xfail-XOPEN2K8/netdb.h/linknamespace): Likewise.
+
 2015-06-12  Joseph Myers  <joseph@codesourcery.com>
 
 	[BZ #18530]

conform/Makefile

@@ -358,10 +358,7 @@ test-xfail-UNIX98/syslog.h/linknamespace = yes
 test-xfail-UNIX98/unistd.h/linknamespace = yes
 test-xfail-UNIX98/wchar.h/linknamespace = yes
 test-xfail-XOPEN2K/fmtmsg.h/linknamespace = yes
-test-xfail-XOPEN2K/netdb.h/linknamespace = yes
 test-xfail-XOPEN2K/syslog.h/linknamespace = yes
-test-xfail-POSIX2008/netdb.h/linknamespace = yes
 test-xfail-POSIX2008/semaphore.h/linknamespace = yes
 test-xfail-XOPEN2K8/fmtmsg.h/linknamespace = yes
-test-xfail-XOPEN2K8/netdb.h/linknamespace = yes
 test-xfail-XOPEN2K8/syslog.h/linknamespace = yes

conform/list-header-symbols.pl

@@ -55,13 +55,14 @@
 $extra_syms{"XOPEN2K"} = ["errno", "setjmp", "va_end", "environ", "signgam",
 			  "sigsetjmp", "optarg", "optind", "opterr", "optopt",
 			  "daylight", "timezone", "tzname", "getdate_err",
-			  "h_errno"];
+			  "h_errno", "in6addr_any", "in6addr_loopback"];
 $extra_syms{"XOPEN2K8"} = ["errno", "setjmp", "va_end", "environ", "signgam",
 			   "sigsetjmp", "optarg", "optind", "opterr", "optopt",
-			   "daylight", "timezone", "tzname", "getdate_err"];
+			   "daylight", "timezone", "tzname", "getdate_err",
+			   "in6addr_any", "in6addr_loopback"];
 $extra_syms{"POSIX2008"} = ["errno", "setjmp", "va_end", "environ",
 			    "sigsetjmp", "optarg", "optind", "opterr", "optopt",
-			    "tzname"];
+			    "tzname", "in6addr_any", "in6addr_loopback"];
 
 %user_syms = ();