remove support for non-ANSI compilation

*** 17,26 ****
--- 17,28 ----
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+  *
   * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _EXEC_ATTR_H
*** 127,157 ****
          execstr_t *head_exec;
          execstr_t *prev_exec;
  } _priv_execattr;               /* Un-supported. For Sun internal use only */
  
  
- #ifdef    __STDC__
  extern execattr_t *getexecattr(void);
  extern execattr_t *getexecuser(const char *, const char *, const char *, int);
  extern execattr_t *getexecprof(const char *, const char *, const char *, int);
  extern execattr_t *match_execattr(execattr_t *, const char *, const char *, \
          const char *);
  extern void free_execattr(execattr_t *);
  extern void setexecattr(void);
  extern void endexecattr(void);
  
- #else                           /* not __STDC__ */
- 
- extern execattr_t *getexecattr();
- extern execattr_t *getexecuser();
- extern execattr_t *getexecprof();
- extern execattr_t *match_execattr();
- extern void setexecattr();
- extern void endexecattr();
- extern void free_execattr();
- #endif
- 
  #ifdef __cplusplus
  }
  #endif
  
  #endif  /* _EXEC_ATTR_H */
--- 129,147 ----