added babel

--- a/src/HOL/document/root.tex	Tue Sep 16 09:21:27 2008 +0200
+++ b/src/HOL/document/root.tex	Tue Sep 16 09:21:28 2008 +0200
@@ -4,6 +4,7 @@
 \documentclass[11pt,a4paper]{article}
 \usepackage{graphicx,isabelle,isabellesym,latexsym}
 \usepackage{amssymb}
+\usepackage[english]{babel}
 \usepackage[only,bigsqcap]{stmaryrd}
 \usepackage[latin1]{inputenc}
 \usepackage{pdfsetup}