Use of vifscript requires full path unlike the example suggests

[Stefan Bader]

The example (commented out by default) in /etc/xl.conf suggest that the script will be found if it is in /etc/xen/scripts. This is not true and enabling the example as is results in no network connection (vif-bridge is not called).

[Stefan Bader (smb)]

The following change to vif-setup will allow vifscript to be used without an explicit path:

@@ -1,9 +1,13 @@
 #!/bin/bash

+. "$(dirname $0)/hotplugpath.sh"
+
+PATH=$XEN_SCRIPT_DIR:$PATH
+
 if test "$script"
 then
     exec $script $*
 else
- exec /etc/xen/scripts/vif-bridge $*
+ exec $XEN_SCRIPT_DIR/vif-bridge $*
 fi