Remove unused HAVE_* symbols for functions.

* configure.in (AC_CHECK_FUNCS): Remove XSetWMProtocols,
getdomainname, mblen (twice), mbrlen (twice), mbsinit, ualarm,
getsockopt, setsockopt, mremap, mempcpy.
* admin/CPP-DEFINES (HAVE_GETDOMAINNAME): Remove.
* msdos/sed2v2.inp (HAVE_MBLEN): Remove.
* msdos/sed2x.inp (HAVE_XSETWMPROTOCOLS): Remove.
* nt/config.nt (HAVE_GETDOMAINNAME, HAVE_XSETWMPROTOCOLS)
(HAVE_GETSOCKOPT, HAVE_SETSOCKOPT): Remove; not needed.
* src/s/ms-w32.h (HAVE_GETDOMAINNAME): Remove; not needed.

2 files changed, 3 insertions, 4 deletions

diff --git a/nt/ChangeLog b/nt/ChangeLog
index 22f7bc1d5ea..faf6f80c4c5 100644
--- a/nt/ChangeLog
+++ b/nt/ChangeLog
@@ -1,5 +1,8 @@
 2012-05-19  Paul Eggert  <eggert@cs.ucla.edu>
 
+        * config.nt (HAVE_GETDOMAINNAME, HAVE_XSETWMPROTOCOLS)
+        (HAVE_GETSOCKOPT, HAVE_SETSOCKOPT): Remove; not needed.
+
         * config.nt (HAVE_FTIME): Remove undef; not needed.
 
 2012-05-01  Glenn Morris  <rgm@gnu.org>
diff --git a/nt/config.nt b/nt/config.nt
index 0ae14c93d94..9d933c2d0a0 100644
--- a/nt/config.nt
+++ b/nt/config.nt
@@ -179,7 +179,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #undef GETTIMEOFDAY_ONE_ARGUMENT
 #endif
 #undef HAVE_GETHOSTNAME
-#undef HAVE_GETDOMAINNAME
 #undef HAVE_DUP2
 #undef HAVE_RENAME
 #undef HAVE_CLOSEDIR
@@ -205,7 +204,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 #undef HAVE_XRMSETDATABASE
 #undef HAVE_XSCREENRESOURCESTRING
 #undef HAVE_XSCREENNUMBEROFSCREEN
-#undef HAVE_XSETWMPROTOCOLS
 
 #undef HAVE_MKDIR
 #undef HAVE_RMDIR
@@ -244,8 +242,6 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #define HAVE_SENDTO 1
 #define HAVE_RECVFROM 1
-#define HAVE_GETSOCKOPT 1
-#define HAVE_SETSOCKOPT 1
 #define HAVE_GETSOCKNAME 1
 #define HAVE_GETPEERNAME 1
 #define HAVE_SNPRINTF 1