Update notes.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@7106 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/docs/README b/docs/README
index cfefe76..81fea45 100644
--- a/docs/README
+++ b/docs/README
@@ -138,6 +138,8 @@
   tetex
   xaw3d
 passivetex
+xpdf
+  xpdf-tools
 
 pdfxmltex still bombs when building the print docs.  On SuSE 10.1 I
 edited /etc/texmf/web2c/texmf.cnf and changed