Dependency on Provers/nat_transitive

--- a/src/HOL/Makefile	Tue Apr 08 12:03:59 1997 +0200
+++ b/src/HOL/Makefile	Wed Apr 09 12:31:11 1997 +0200
@@ -30,6 +30,7 @@
 	typedef.ML thy_syntax.ML thy_data.ML ../Pure/section_utils.ML\
 	../Provers/hypsubst.ML ../Provers/classical.ML ../Provers/blast.ML \
 	../Provers/simplifier.ML ../Provers/splitter.ML\
+	../Provers/nat_transitive.ML \
 	$(NAMES:%=%.thy) $(NAMES:%=%.ML)
 
 $(BIN)/HOL:   $(BIN)/Pure  $(FILES)