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, 2 insertions, 1 deletions

diff --git a/src/ChangeLog b/src/ChangeLog
index 4e648223497..0f1914b6e46 100644
--- a/src/ChangeLog
+++ b/src/ChangeLog
@@ -1,5 +1,7 @@
 2012-05-19  Paul Eggert  <eggert@cs.ucla.edu>
 
+        * s/ms-w32.h (HAVE_GETDOMAINNAME): Remove; not needed.
+
         * m/vax.h: Remove; no longer needed since HAVE_FTIME is being removed.
         * s/ms-w32.h (HAVE_FTIME): Remove; not needed.
 
diff --git a/src/s/ms-w32.h b/src/s/ms-w32.h
index 815ab9101f4..63fc2f1f62b 100644
--- a/src/s/ms-w32.h
+++ b/src/s/ms-w32.h
@@ -122,7 +122,6 @@ struct sigaction {
 
 #define HAVE_GETTIMEOFDAY 1
 #define HAVE_GETHOSTNAME 1
-#undef  HAVE_GETDOMAINNAME
 #define HAVE_DUP2 1
 #define HAVE_RENAME 1
 #define HAVE_CLOSEDIR 1