remove support for non-ANSI compilation

*** 20,40 ****
   * CDDL HEADER END
   */
  /*      Copyright (c) 1988 AT&T */
  /*        All Rights Reserved   */
  
- 
  /*
   * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _SIGNAL_H
  #define _SIGNAL_H
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.5.3.4 */
- 
  #include <sys/feature_tests.h>
  
  #if defined(__EXTENSIONS__) || !defined(_STRICT_STDC) || \
          defined(__XOPEN_OR_POSIX)
  #include <sys/types.h>  /* need pid_t/uid_t/size_t/clock_t/caddr_t/pthread_t */
--- 20,39 ----
   * CDDL HEADER END
   */
  /*      Copyright (c) 1988 AT&T */
  /*        All Rights Reserved   */
  
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+  *
   * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _SIGNAL_H
  #define _SIGNAL_H
  
  #include <sys/feature_tests.h>
  
  #if defined(__EXTENSIONS__) || !defined(_STRICT_STDC) || \
          defined(__XOPEN_OR_POSIX)
  #include <sys/types.h>  /* need pid_t/uid_t/size_t/clock_t/caddr_t/pthread_t */
*** 56,67 ****
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  
- #if defined(__STDC__)
- 
  extern const char       **_sys_siglistp;        /* signal descriptions */
  extern const int        _sys_siglistn;          /* # of signal descriptions */
  
  #if defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX)
  #define _sys_siglist    _sys_siglistp
--- 55,64 ----
*** 130,219 ****
  extern int sigtimedwait(const sigset_t *_RESTRICT_KYWD,
          siginfo_t *_RESTRICT_KYWD, const struct timespec *_RESTRICT_KYWD);
  extern int sigqueue(pid_t, int, const union sigval);
  #endif /* defined(__EXTENSIONS__) || (!defined(_STRICT_STDC) && */
  
- #else   /* __STDC__ */
- 
- extern char     **_sys_siglistp;        /* signal descriptions */
- extern int      _sys_siglistn;          /* # of signal descriptions */
- 
- #if defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX)
- #define _sys_siglist    _sys_siglistp
- #define _sys_nsig       _sys_siglistn
- #endif
- 
- #if defined(__EXTENSIONS__) || defined(__XOPEN_OR_POSIX)
- extern int kill();
- extern int sigaction();
- #ifndef _KERNEL
- extern int sigaddset();
- extern int sigdelset();
- extern int sigemptyset();
- extern int sigfillset();
- extern int sigismember();
- #endif
- extern int sigpending();
- extern int sigprocmask();
- extern int sigsuspend();
- #endif /* defined(__EXTENSIONS__)... */
- 
- #if defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX) || \
-         defined(_XPG4_2)
- extern void (*bsd_signal())();
- extern int killpg();
- extern int siginterrupt();
- #endif /* defined(__EXTENSIONS__) ... */
- 
- #if defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX) || \
-         (defined(_XPG4_2) && !defined(_XPG6))
- extern int sigstack();
- #endif
- 
- #if defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX)
- extern int gsignal();
- extern int (*ssignal)();
- extern int sigsend();
- extern int sigsendset();
- extern int sig2str();
- extern int str2sig();
- #define SIG2STR_MAX     32
- #endif
- 
- #if defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX) || \
-         defined(_XPG4_2)
- extern int sigaltstack();
- extern int sighold();
- extern int sigignore();
- extern int sigpause();
- extern int sigrelse();
- extern void (*sigset())();
- #endif
- 
- #if defined(__EXTENSIONS__) || !defined(__XOPEN_OR_POSIX) || \
-         (_POSIX_C_SOURCE > 2)
- #include <sys/siginfo.h>
- #include <sys/time.h>
- extern int pthread_kill();
- extern int pthread_sigmask();
- extern int sigwaitinfo();
- extern int sigtimedwait();
- extern int sigqueue();
- #endif
- 
- #endif  /* __STDC__ */
- 
  /*
   * sigwait() prototype is defined here.
   */
  
  #if     defined(__EXTENSIONS__) || (!defined(_STRICT_STDC) && \
          !defined(__XOPEN_OR_POSIX)) || (_POSIX_C_SOURCE - 0 >= 199506L) || \
          defined(_POSIX_PTHREAD_SEMANTICS)
  
- #if     defined(__STDC__)
- 
  #if     (_POSIX_C_SOURCE - 0 >= 199506L) || defined(_POSIX_PTHREAD_SEMANTICS)
  
  #ifdef __PRAGMA_REDEFINE_EXTNAME
  #pragma redefine_extname sigwait __posix_sigwait
  extern int sigwait(const sigset_t *_RESTRICT_KYWD, int *_RESTRICT_KYWD);
--- 127,144 ----
*** 239,284 ****
  
  extern int sigwait(sigset_t *);
  
  #endif  /* (_POSIX_C_SOURCE - 0 >= 199506L) || ... */
  
- 
- #else  /* __STDC__ */
- 
- 
- #if     (_POSIX_C_SOURCE - 0 >= 199506L) || defined(_POSIX_PTHREAD_SEMANTICS)
- 
- #ifdef __PRAGMA_REDEFINE_EXTNAME
- #pragma redefine_extname sigwait __posix_sigwait
- extern int sigwait();
- #else  /* __PRAGMA_REDEFINE_EXTNAME */
- 
- extern int __posix_sigwait();
- 
- #ifdef  __lint
- #define sigwait __posix_sigwait
- #else   /* !__lint */
- 
- static int
- sigwait(__setp, __signo)
-         sigset_t *__setp;
-         int *__signo;
- {
-         return (__posix_sigwait(__setp, __signo));
- }
- 
- #endif /* !__lint */
- #endif /* __PRAGMA_REDEFINE_EXTNAME */
- 
- #else  /* (_POSIX_C_SOURCE - 0 >= 199506L) || ... */
- 
- extern int sigwait();
- 
- #endif /* (_POSIX_C_SOURCE - 0 >= 199506L) || ... */
- 
- #endif /* __STDC__ */
- 
  #endif /* defined(__EXTENSIONS__) || (!defined(_STRICT_STDC) ... */
  
  #ifdef  __cplusplus
  }
  #endif
--- 164,173 ----