Fix _known_hosts calling _known_hosts_real

Added -h argument.  Added "deprecated" notes.

bash_completion

@@ -1045,7 +1045,8 @@ _user_at_host() {
 }
 shopt -u hostcomplete && complete -F _user_at_host $nospace talk ytalk finger
 
-# See: _known_hosts_real()
+# NOTE: Using this function as a helper function is deprecated.  Use 
+#       `_known_hosts_real' instead.
 _known_hosts()
 {
 	local cur
@@ -1053,7 +1054,8 @@ _known_hosts()
 	COMPREPLY=()
 	cur=`_get_cword`
 
-	_known_hosts_real "$@"
+	# NOTE: Passing "$@" is deprecated.  See NOTE above.
+	_known_hosts_real -h "$cur" "$@"
 }
 
 # Helper function for completing _known_hosts.