remove support for non-ANSI compilation

*** 18,27 ****
--- 18,28 ----
   *
   * CDDL HEADER END
   */
  
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
   * Copyright (c) 1992, 2010, Oracle and/or its affiliates. All rights reserved.
   */
  
  #ifndef _SYNCH_H
  #define _SYNCH_H
*** 84,94 ****
          mutex_t         mutex;          /* used with process-shared rwlocks */
          cond_t          readercv;       /* used only to indicate ownership */
          cond_t          writercv;       /* used only to indicate ownership */
  } rwlock_t;
  
- #ifdef  __STDC__
  int     _lwp_mutex_lock(lwp_mutex_t *);
  int     _lwp_mutex_unlock(lwp_mutex_t *);
  int     _lwp_mutex_trylock(lwp_mutex_t *);
  int     _lwp_cond_wait(lwp_cond_t *, lwp_mutex_t *);
  int     _lwp_cond_timedwait(lwp_cond_t *, lwp_mutex_t *, timespec_t *);
--- 85,94 ----
*** 125,178 ****
  int     sema_timedwait(sema_t *, const timespec_t *);
  int     sema_reltimedwait(sema_t *, const timespec_t *);
  int     sema_post(sema_t *);
  int     sema_trywait(sema_t *);
  
- #else   /* __STDC__ */
- 
- int     _lwp_mutex_lock();
- int     _lwp_mutex_unlock();
- int     _lwp_mutex_trylock();
- int     _lwp_cond_wait();
- int     _lwp_cond_timedwait();
- int     _lwp_cond_reltimedwait();
- int     _lwp_cond_signal();
- int     _lwp_cond_broadcast();
- int     _lwp_sema_init();
- int     _lwp_sema_wait();
- int     _lwp_sema_trywait();
- int     _lwp_sema_post();
- int     cond_init();
- int     cond_destroy();
- int     cond_wait();
- int     cond_timedwait();
- int     cond_reltimedwait();
- int     cond_signal();
- int     cond_broadcast();
- int     mutex_init();
- int     mutex_destroy();
- int     mutex_consistent();
- int     mutex_lock();
- int     mutex_trylock();
- int     mutex_unlock();
- int     rwlock_init();
- int     rwlock_destroy();
- int     rw_rdlock();
- int     rw_wrlock();
- int     rw_unlock();
- int     rw_tryrdlock();
- int     rw_trywrlock();
- int     sema_init();
- int     sema_destroy();
- int     sema_wait();
- int     sema_timedwait();
- int     sema_reltimedwait();
- int     sema_post();
- int     sema_trywait();
- 
- #endif  /* __STDC__ */
- 
  #endif /* _ASM */
  
  /* "Magic numbers" tagging synchronization object types */
  #define MUTEX_MAGIC     _MUTEX_MAGIC
  #define SEMA_MAGIC      _SEMA_MAGIC
--- 125,134 ----
*** 236,247 ****
  #define NO_COMPETING_THREADS    1
  #endif
  
  #ifndef _ASM
  
- #ifdef  __STDC__
- 
  /*
   * The *_held() functions apply equally well to Solaris threads
   * and to Posix threads synchronization objects, but the formal
   * type declarations are different, so we just declare the argument
   * to each *_held() function to be a void *, expecting that they will
--- 192,201 ----
*** 250,274 ****
  int _sema_held(void *);                 /* sema_t or sem_t */
  int _rw_read_held(void *);              /* rwlock_t or pthread_rwlock_t */
  int _rw_write_held(void *);             /* rwlock_t or pthread_rwlock_t */
  int _mutex_held(void *);                /* mutex_t or pthread_mutex_t */
  
- #else   /* __STDC__ */
- 
- int _sema_held();
- int _rw_read_held();
- int _rw_write_held();
- int _mutex_held();
- 
- #endif  /* __STDC__ */
- 
  /* Pause API */
- #ifdef  __STDC__
  void smt_pause(void);
- #else   /* __STDC__ */
- void smt_pause();
- #endif  /* __STDC__ */
  
  #endif /* _ASM */
  
  #ifdef  __cplusplus
  }
--- 204,215 ----