Add char * which is supposed to work like in C and int

ast.cpp

@@ -64,13 +64,13 @@ struct Ast_Type;
 struct Ast_Expr:Ast{  };
 
 #define VALUE_FIELDS             \
-Ast_Type *type;         \
+Ast_Type *type;                  \
 union{                           \
   bool               bool_val;   \
   F64                f64_val;    \
   Intern_String      intern_val; \
   BigInt             big_int_val;\
-  Ast_Type *type_val;   \
+  Ast_Type *type_val;            \
 };
 #define INLINE_VALUE_FIELDS union{Value value; struct{VALUE_FIELDS};}
 struct Value{VALUE_FIELDS};