xsettings.c: include limits.h and update file comment.

src/ChangeLog

+2010-04-30  Jan Djärv  <jan.h.d@swipnet.se>
+
+	* xsettings.c: include limits.h and update file comment.
+
 2010-04-30  Glenn Morris  <rgm@gnu.org>
 
 	* Makefile.in (OLDXMENU, LIBXMENU) [HAVE_MENUS]:

src/xsettings.c

-/* Functions for handle font changes dynamically.
+/* Functions for handle font and other changes dynamically.
    Copyright (C) 2009, 2010
                  Free Software Foundation, Inc.
 
@@ -18,6 +18,7 @@ You should have received a copy of the GNU General Public License
 along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "config.h"
+#include <limits.h>
 #include <setjmp.h>
 #include <fcntl.h>
 #include "lisp.h"