remove support for non-ANSI compilation

*** 18,36 ****
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
   * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _MQUEUE_H
  #define _MQUEUE_H
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  #include <sys/feature_tests.h>
  #include <sys/types.h>
  #include <sys/fcntl.h>
  #include <sys/signal.h>
  #include <sys/siginfo.h>
--- 18,36 ----
   * information: Portions Copyright [yyyy] [name of copyright owner]
   *
   * CDDL HEADER END
   */
  /*
+  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
+  *
   * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
   * Use is subject to license terms.
   */
  
  #ifndef _MQUEUE_H
  #define _MQUEUE_H
  
  #include <sys/feature_tests.h>
  #include <sys/types.h>
  #include <sys/fcntl.h>
  #include <sys/signal.h>
  #include <sys/siginfo.h>
*** 51,61 ****
  };
  
  /*
   * function prototypes
   */
- #if     defined(__STDC__)
  #if     (_POSIX_C_SOURCE - 0 > 0) && (_POSIX_C_SOURCE - 0 <= 2)
  #error  "POSIX Message Passing is not supported in POSIX.1-1990"
  #endif
  #include <sys/siginfo.h>
  mqd_t   mq_open(const char *, int, ...);
--- 51,60 ----
*** 75,98 ****
                  const struct timespec *_RESTRICT_KYWD);
  int     mq_notify(mqd_t, const struct sigevent *);
  int     mq_getattr(mqd_t, struct mq_attr *);
  int     mq_setattr(mqd_t, const struct mq_attr *_RESTRICT_KYWD,
                  struct mq_attr *_RESTRICT_KYWD);
- #else
- mqd_t   mq_open();
- int     mq_close();
- int     mq_unlink();
- int     mq_send();
- int     mq_timedsend();
- int     mq_reltimedsend_np();
- ssize_t mq_receive();
- ssize_t mq_timedreceive();
- ssize_t mq_reltimedreceive_np();
- int     mq_notify();
- int     mq_getattr();
- int     mq_setattr();
- #endif  /* __STDC__ */
  
  #ifdef  __cplusplus
  }
  #endif
  
--- 74,83 ----