patch lower-case-segops

*** 305,317 ****
                          AS_LOCK_EXIT(as, &as->a_lock);
                          AS_LOCK_ENTER(as, &as->a_lock, RW_WRITER);
                  retry:
                          seg = as_segat(as, addr);
                          ASSERT(seg != NULL);
!                         SEGOP_GETPROT(seg, addr, 0, &oprot);
                          if (prot != oprot) {
!                                 err = SEGOP_SETPROT(seg, addr, PAGESIZE, prot);
                                  if (err == IE_RETRY) {
                                          ASSERT(retrycnt == 0);
                                          retrycnt++;
                                          goto retry;
                                  }
--- 305,317 ----
                          AS_LOCK_EXIT(as, &as->a_lock);
                          AS_LOCK_ENTER(as, &as->a_lock, RW_WRITER);
                  retry:
                          seg = as_segat(as, addr);
                          ASSERT(seg != NULL);
!                         segop_getprot(seg, addr, 0, &oprot);
                          if (prot != oprot) {
!                                 err = segop_setprot(seg, addr, PAGESIZE, prot);
                                  if (err == IE_RETRY) {
                                          ASSERT(retrycnt == 0);
                                          retrycnt++;
                                          goto retry;
                                  }
*** 400,410 ****
          retry:
                  ASSERT(pwp->wp_flags & WP_SETPROT);
                  if ((seg = as_segat(as, vaddr)) != NULL &&
                      !(pwp->wp_flags & WP_NOWATCH)) {
                          prot = pwp->wp_prot;
!                         err = SEGOP_SETPROT(seg, vaddr, PAGESIZE, prot);
                          if (err == IE_RETRY) {
                                  ASSERT(retrycnt == 0);
                                  retrycnt++;
                                  goto retry;
                          }
--- 400,410 ----
          retry:
                  ASSERT(pwp->wp_flags & WP_SETPROT);
                  if ((seg = as_segat(as, vaddr)) != NULL &&
                      !(pwp->wp_flags & WP_NOWATCH)) {
                          prot = pwp->wp_prot;
!                         err = segop_setprot(seg, vaddr, PAGESIZE, prot);
                          if (err == IE_RETRY) {
                                  ASSERT(retrycnt == 0);
                                  retrycnt++;
                                  goto retry;
                          }