load thy_edit.ML before isar.ML;

--- a/src/Pure/Isar/ROOT.ML	Tue Jul 15 19:39:37 2008 +0200
+++ b/src/Pure/Isar/ROOT.ML	Tue Jul 15 22:37:55 2008 +0200
@@ -81,9 +81,9 @@
 use "../old_goals.ML";
 use "outer_syntax.ML";
 use "../Thy/thy_info.ML";
+use "../Thy/thy_edit.ML";
 use "session.ML";
 use "isar.ML";
-use "../Thy/thy_edit.ML";
 
 (*theory and proof operations*)
 use "rule_insts.ML";