Remove Unixware and openserver support

cde/programs/dtksh/ksh93/src/cmd/ksh93/sh/init.c

@@ -120,9 +120,6 @@
 #   undef  isblank
 #   define isblank(x)      iswblank(x)
 #   if !_lib_iswblank
-#if defined(USL)
-#include <wctype.h>
-#endif
 
 	static int
 	iswblank __PARAM__((wint_t wc), (wc)) __OTORP__(wint_t wc;){

cde/programs/dtksh/ksh93/src/lib/libast/sfio/sfhdr.h

@@ -623,9 +623,7 @@ extern double	frexp _ARG_((double, int*));
 extern double	ldexp _ARG_((double,int));
 
 extern int	getpagesize _ARG_((void));
-#ifndef __USLC__
 extern Void_t*	memccpy _ARG_((Void_t*, const Void_t*, int, size_t));
-#endif
 
 #if !_PACKAGE_ast
 extern void	bcopy _ARG_((const Void_t*, Void_t*, int));

cde/programs/dtksh/ksh93/src/lib/libast/string/strmatch.c

@@ -130,10 +130,6 @@
 
 #if !_lib_iswblank
 
-#ifdef USL
-#include <wctype.h>
-#endif
-
 static int
 iswblank __PARAM__((wint_t wc), (wc)) __OTORP__(wint_t wc;){
 	static int	initialized;