remove support for non-ANSI compilation

@@ -17,19 +17,19 @@
  * fields enclosed by brackets "[]" replaced with your own identifying
  * information: Portions Copyright [yyyy] [name of copyright owner]
  *
  * CDDL HEADER END
  */
+/*
+ * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+ */
 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
 /*        All Rights Reserved   */
 
-
 #ifndef _LIBW_H
 #define _LIBW_H
 
-#pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.1   */
-
 #include <stdlib.h>
 
 #ifdef  __cplusplus
 extern "C" {
 #endif

@@ -42,15 +42,11 @@
         short int _pcw;         /*      WIDE_CHAR width */
         char _multibyte;        /*      1=multi-byte, 0=single-byte     */
 } eucwidth_t;
 #endif
 
-#ifdef __STDC__
 void getwidth(eucwidth_t *);
-#else
-void getwidth();
-#endif  /* __STDC__ */
 
 #ifdef  __cplusplus
 }
 #endif