depend: version dependency

* enc/depend (enc, trans): fix version dependency, let encoding
  and transcoding shared object files depend on config.status,
  instead of enc.mk which is regenerated at each build, for the
  RUBY_SO_NAME value used at runtime link.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53325 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

enc/depend

@@ -74,7 +74,7 @@ $(LIBTRANS): $(TRANSOBJS)
 	$(Q) $(AR) $(ARFLAGS)$@ $(TRANSOBJS)
 	@-$(RANLIB) $@ 2> /dev/null || true
 
-enc trans $(ENCSOS) $(TRANSSOS): enc.mk
+enc trans $(ENCSOS) $(TRANSSOS): config.status
 
 srcs: $(TRANSCSRCS)