5042 stop using deprecated atomic functions

*** 47,57 ****
          do {
                  oldval = *count_p;
                  newval = oldval - n;
                  if (oldval <= n)
                          return (0);             /* no resources left    */
!         } while (cas32(count_p, oldval, newval) != oldval);
  
          return (newval);
  }
  
  /*
--- 47,57 ----
          do {
                  oldval = *count_p;
                  newval = oldval - n;
                  if (oldval <= n)
                          return (0);             /* no resources left    */
!         } while (atomic_cas_32(count_p, oldval, newval) != oldval);
  
          return (newval);
  }
  
  /*
*** 68,78 ****
  
          /* ATOMICALLY */
          do {
                  oldval = *count_p;
                  newval = oldval + n;
!         } while (cas32(count_p, oldval, newval) != oldval);
  }
  
  /*
   * Callback code invoked from STREAMs when the recv data buffer is free
   * for recycling.
--- 68,78 ----
  
          /* ATOMICALLY */
          do {
                  oldval = *count_p;
                  newval = oldval + n;
!         } while (atomic_cas_32(count_p, oldval, newval) != oldval);
  }
  
  /*
   * Callback code invoked from STREAMs when the recv data buffer is free
   * for recycling.