5042 stop using deprecated atomic functions

*** 25,36 ****
   */
  
  #ifndef _SYS_SYNCH32_H
  #define _SYS_SYNCH32_H
  
- #pragma ident   "%Z%%M% %I%     %E% SMI"
- 
  #ifdef  __cplusplus
  extern "C" {
  #endif
  
  /* special defines for LWP mutexes */
--- 25,34 ----
*** 40,50 ****
  #define mutex_rcount            flags.mbcp_type_un.mtype_rcount.count_type1
  #define mutex_magic             flags.magic
  #define mutex_owner             data
  /* used to atomically operate on whole word via cas or swap instruction */
  #define mutex_lockword          lock.lock32.lockword
! /* this requires cas64 */
  #define mutex_lockword64        lock.owner64
  /* these are bytes */
  #define mutex_lockw             lock.lock64.pad[4]
  #define mutex_waiters           lock.lock64.pad[7]
  #define mutex_spinners          lock.lock64.pad[5]
--- 38,48 ----
  #define mutex_rcount            flags.mbcp_type_un.mtype_rcount.count_type1
  #define mutex_magic             flags.magic
  #define mutex_owner             data
  /* used to atomically operate on whole word via cas or swap instruction */
  #define mutex_lockword          lock.lock32.lockword
! /* this requires atomic_cas_64 */
  #define mutex_lockword64        lock.owner64
  /* these are bytes */
  #define mutex_lockw             lock.lock64.pad[4]
  #define mutex_waiters           lock.lock64.pad[7]
  #define mutex_spinners          lock.lock64.pad[5]