Bro doc mode now only does a "shallow" copy of declared record types

This is necessary so that the cloned type will be able to see additions
to the original type's list of fields

src/Type.h

@@ -456,6 +456,8 @@ public:
 	// Given an offset, returns the field's name.
 	const char* FieldName(int field) const;
 
+	type_decl_list* Types() { return types; }
+
 	// Given an offset, returns the field's TypeDecl.
 	const TypeDecl* FieldDecl(int field) const;
 	TypeDecl* FieldDecl(int field);