[MEDIUM] provide default ACLs

[MEDIUM] provide default ACLs

The following ACLs are predefined :

  LOCALHOST      = src 127.0.0.1/8
  HTTP_1.0       = req_ver 1.0
  HTTP_1.1       = req_ver 1.1
  METH_CONNECT   = method CONNECT
  METH_GET       = method GET HEAD
  METH_HEAD      = method HEAD
  METH_OPTIONS   = method OPTIONS
  METH_POST      = method POST
  METH_TRACE     = method TRACE
  HTTP_URL_ABS   = url_reg ^[^/:]*://
  HTTP_URL_SLASH = url_beg /
  HTTP_URL_STAR  = url *
  HTTP_CONTENT   = hdr_val(content-length) gt 0