remove support for non-ANSI compilation

*** 17,53 ****
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _EXECINFO_H
  #define _EXECINFO_H
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  /*
   * These functions provide glibc-compatible backtrace functionality.
   * Improved functionality is available using Solaris-specific APIs;
   * see man page for walkcontext(), printstack() and addtosymstr().
   */
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
- #if defined(__STDC__)
  extern int backtrace(void **, int);
  extern char **backtrace_symbols(void *const *, int);
  extern void backtrace_symbols_fd(void *const *, int, int);
- #else
- extern int backtrace();
- extern char **backtrace_symbols();
- extern void backtrace_symbols_fd();
- #endif
  
  #ifdef  __cplusplus
  }
  #endif
  
--- 17,47 ----
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+  *
   * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _EXECINFO_H
  #define _EXECINFO_H
  
  /*
   * These functions provide glibc-compatible backtrace functionality.
   * Improved functionality is available using Solaris-specific APIs;
   * see man page for walkcontext(), printstack() and addtosymstr().
   */
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  extern int backtrace(void **, int);
  extern char **backtrace_symbols(void *const *, int);
  extern void backtrace_symbols_fd(void *const *, int, int);
  
  #ifdef  __cplusplus
  }
  #endif