5042 stop using deprecated atomic functions

*** 465,475 ****
          ASSERT(vfsops != NULL);
  
          op = vfsp->vfs_op;
          membar_consumer();
          if (vfsp->vfs_femhead == NULL &&
!             casptr(&vfsp->vfs_op, op, vfsops) == op) {
                  return;
          }
          fsem_setvfsops(vfsp, vfsops);
  }
  
--- 465,475 ----
          ASSERT(vfsops != NULL);
  
          op = vfsp->vfs_op;
          membar_consumer();
          if (vfsp->vfs_femhead == NULL &&
!             atomic_cas_ptr(&vfsp->vfs_op, op, vfsops) == op) {
                  return;
          }
          fsem_setvfsops(vfsp, vfsops);
  }
  
*** 2967,2977 ****
          newhrt = ts2hrt(&newts);
          for (;;) {
                  oldhrt = hrt;
                  if (newhrt <= hrt)
                          newhrt = hrt + 1;
!                 if (cas64((uint64_t *)&hrt, oldhrt, newhrt) == oldhrt)
                          break;
          }
          hrt2ts(newhrt, ts);
  }
  
--- 2967,2977 ----
          newhrt = ts2hrt(&newts);
          for (;;) {
                  oldhrt = hrt;
                  if (newhrt <= hrt)
                          newhrt = hrt + 1;
!                 if (atomic_cas_64((uint64_t *)&hrt, oldhrt, newhrt) == oldhrt)
                          break;
          }
          hrt2ts(newhrt, ts);
  }