added babel -- necessary for bind infix syntax

--- a/src/HOL/document/root.tex	Fri Mar 06 20:30:17 2009 +0100
+++ b/src/HOL/document/root.tex	Fri Mar 06 20:30:18 2009 +0100
@@ -1,9 +1,8 @@
-
-% $Id$
 
 \documentclass[11pt,a4paper]{article}
 \usepackage{graphicx,isabelle,isabellesym,latexsym}
 \usepackage{amssymb}
+\usepackage[english]{babel}
 \usepackage[only,bigsqcap]{stmaryrd}
 \usepackage[latin1]{inputenc}
 \usepackage{pdfsetup}