makefiles: Generate the dependencies line to avoid some code duplication.

loader/Makefile.in

diff --git a/loader/Makefile.in b/loader/Makefile.in
index 51f190d..9cb6ba6 100644
--- a/loader/Makefile.in
+++ b/loader/Makefile.in
@@ -60,4 +60,4 @@
 clean::
 	$(RM) $(WINE_BINARIES) $(MODULE)
 
-### Dependencies:
+@DEPENDENCIES@  # everything below this line is overwritten by make depend