Cleaned up the reflection code a bit

* Renamed 'tag' variable to 'handler'
* Removed addAlias stuff, instead check for matching names with if statements
* Added after_reading function that is called by Reader after reading a complete object. This generalizes Packaged::validate, which is now also called via this mechanism.
* Removed some backwards compatibility with <0.3.0 for templates

src/data/field.hpp

@@ -74,6 +74,8 @@ class Field : public IntrusivePtrVirtualBase {
   
   private:
   DECLARE_REFLECTION_VIRTUAL();
+  virtual void after_reading(Version ver);
+  friend void after_reading(Field& s, Version ver);
 };
 
 template <>
@@ -82,6 +84,10 @@ inline void update_index(FieldP& f, size_t index) {
   f->index = index;
 }
 
+inline void after_reading(Field& f, Version ver) {
+  f.after_reading(ver);
+}
+
 inline String type_name(const Field&) {
   return _TYPE_("field");
 }
@@ -258,7 +264,7 @@ inline String type_name(const Value&) {
 // ----------------------------------------------------------------------------- : Utilities
 
 #define DECLARE_FIELD_TYPE(Type) \
-  DECLARE_REFLECTION(); public: \
+  DECLARE_REFLECTION_OVERRIDE(); public: \
   virtual ValueP newValue(const FieldP& thisP) const; \
   virtual StyleP newStyle(const FieldP& thisP) const; \
   virtual String typeName() const
@@ -284,14 +290,14 @@ inline String type_name(const Value&) {
   }
 
 #define DECLARE_STYLE_TYPE(Type) \
-  DECLARE_REFLECTION(); public: \
+  DECLARE_REFLECTION_OVERRIDE(); public: \
   DECLARE_HAS_FIELD(Type) \
   virtual StyleP clone() const; \
   virtual ValueViewerP makeViewer(DataViewer& parent, const StyleP& thisP); \
   virtual ValueViewerP makeEditor(DataEditor& parent, const StyleP& thisP)
 
 #define DECLARE_VALUE_TYPE(Type,ValueType_) \
-  DECLARE_REFLECTION(); public: \
+  DECLARE_REFLECTION_OVERRIDE(); public: \
   DECLARE_HAS_FIELD(Type) \
   virtual ValueP clone() const; \
   virtual String toString() const; \