quorum-tool: update copyright date

Reviewed-by: Steven Dake <sdake@redhat.com>
Signed-off-by: Fabio M. Di Nitto <fdinitto@redhat.com>

tools/corosync-quorumtool.c

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2009 Red Hat, Inc.
+ * Copyright (c) 2009-2011 Red Hat, Inc.
  *
  * All rights reserved.
  *