cups security update

[1:1.3.7-18:.4]

• Don’t set domain= for cookies.
  [1:1.3.7-18:.3]
• Save classes.conf when a class member printer is
  deleted (bug #594621, STR #3505).
  [1:1.3.7-18:.2]
• Applied patch for CVE-2010-1748 (web interface memory disclosure,
  STR #3577, bug #591983).
• Applied patch for CVE-2010-0542 (texttops unchecked memory
  allocation failure leading to NULL pointer dereference, STR #3516,
  bug #587746).
• Applied patch for CVE-2010-0540 (CUPS administrator web interface
  CSRF, STR #3498, bug #588805).
  [1:1.3.7-18:.1]
• Update classes when a printer is removed (bug #581902).