remove support for non-ANSI compilation

@@ -17,35 +17,27 @@
  * 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) 1988 AT&T */
 /*        All Rights Reserved   */
 
-
 #ifndef _PW_H
 #define _PW_H
 
-#pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.2   */
-
 #ifdef  __cplusplus
 extern "C" {
 #endif
 
-#if defined(__STDC__)
-
 extern char *logname(void);
 extern char *regcmp(const char *, ...);
 extern char *regex(const char *, const char *, ...);
-#else
-extern char *logname();
-extern char *regcmp();
-extern char *regex();
 
-#endif
-
 #ifdef  __cplusplus
 }
 #endif
 
 #endif  /* _PW_H */