Rework elaborate/emit of types.

This rework is needed to reasonably handle new types, like enums.

vhdlpp/Makefile.in

@@ -62,7 +62,7 @@ M = StringHeap.o LineInfo.o
 O = main.o architec.o compiler.o entity.o \
     expression.o package.o scope.o sequential.o vsignal.o vtype.o \
     architec_elaborate.o entity_elaborate.o expression_elaborate.o \
-    sequential_elaborate.o vtype_elaborate.o \
+    sequential_elaborate.o \
     entity_stream.o vtype_stream.o \
     lexor.o lexor_keyword.o parse.o \
     parse_misc.o library.o vhdlreal.o vhdlint.o \