Refresh Makefile.ocaml in objdir if it is modified in srcdir.

Patch by Erick Tryzelaar!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@48149 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile.rules b/Makefile.rules
index 685569a..e28ccf1 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -159,7 +159,7 @@
 #------------------------------------------------------------------------
 ifneq ($(PROJ_OBJ_DIR),$(PROJ_SRC_DIR))
 
-Makefile: $(PROJ_SRC_DIR)/Makefile
+Makefile: $(PROJ_SRC_DIR)/Makefile $(ExtraMakefiles)
 	$(Echo) "Updating Makefile"
 	$(Verb) $(MKDIR) $(@D)
 	$(Verb) $(CP) -f $< $@
@@ -171,7 +171,7 @@
 	@case '$?' in \
           *Makefile.rules) ;; \
           *.in) ;; \
-          *) $(Echo) "Updating $(@F)" ; \
+          *) $(EchoCmd) "Updating $(@F)" ; \
 	     $(MKDIR) $(@D) ; \
 	     $(CP) -f $< $@ ;; \
 	esac