load present.ML earlier: no longer depend on thy_info.ML;

--- a/src/Pure/Isar/ROOT.ML	Sun Jul 22 11:58:23 2007 +0200
+++ b/src/Pure/Isar/ROOT.ML	Sun Jul 22 13:53:46 2007 +0200
@@ -25,10 +25,10 @@
 use "../Thy/ml_context.ML";
 use "../Thy/thy_header.ML";
 use "../Thy/thy_load.ML";
-use "../Thy/thy_info.ML";
 use "../Thy/html.ML";
 use "../Thy/latex.ML";
 use "../Thy/present.ML";
+use "../Thy/thy_info.ML";
 use "../Thy/thm_deps.ML";
 use "../Thy/thm_database.ML";