added conjunction.ML;

--- a/src/Pure/ROOT.ML	Thu Apr 13 12:00:53 2006 +0200
+++ b/src/Pure/ROOT.ML	Thu Apr 13 12:00:54 2006 +0200
@@ -50,6 +50,7 @@
 use "tctical.ML";
 use "search.ML";
 use "meta_simplifier.ML";
+use "conjunction.ML";
 use "goal.ML";
 use "tactic.ML";