Warning from Sun compiling building texk/web2c/web2c/kps.c

While building tetex-3.0 on Solaris 9/SPARC with the Sun C compiler:
  cc -DHAVE_CONFIG_H  -I. -I. -I../.. -I../.. -I.. -I./..
  -I/opt/TWWfsw/libxaw3d15/include -I/opt/TWWfsw/xpm/include   -mr -Qn
  -xO2 -xtarget=generic -xarch=v8  -c kps.c
  "kps.c", line 39: warning: implicit function declaration: toupper

Fix below.

-- 
albert chin ([email protected])

-- snip snip
--- texk/web2c/web2c/kps.c.orig	2005-06-06 13:17:40.000000000 -0500
+++ texk/web2c/web2c/kps.c	2005-06-06 13:18:04.000000000 -0500
@@ -24,6 +24,7 @@
 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 
 #include "web2c.h"
+#include <ctype.h>
 /* Get rid of kpathsea debug definitions. */
 #undef fopen
 #undef fclose