fixed bug where imagex would not create links in /install/autoinst directory

git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@5801 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd

xCAT-server/lib/xcat/plugins/windows.pm

@@ -116,6 +116,7 @@ sub mkimage {
 }
 
 sub mkwinlinks {
+    my $installroot = "/install"; # for now put this, as it breaks for imagex
     my $node = shift;
     my $ent = shift;
     foreach (getips($node)) {