Bug#653750: Need to prefix a host list definition with the hostlist keyword

[Regid Ichira]

  host_reject_connection is a deprecated configuration item.  I think
that without the following patch it would not work as described.  I
also think this is not the only place in which spec.txt attempts to
define a typed list without specifying the type.

--- spec.txt    2012-01-11 00:02:27.000000000 +0200
+++ spec.txt.mod        2012-01-11 00:03:30.000000000 +0200
@@ -7529,7 +7529,7 @@ level - they are not recognized in an in
   * If any item that follows "+include_unknown" requires information that
     cannot found, Exim behaves as if the host does match the list. For example,

-    host_reject_connection = +include_unknown:*.enemy.ex
+    hostlist host_reject_connection = +include_unknown:*.enemy.ex

     rejects connections from any host whose name matches "*.enemy.ex", and also
     any hosts whose name it cannot find.