[qfcc] Support multiple type specs in type_ref

This is needed for `unsigned int` or `unsigned long` in type
expressions. However, there is a problem where @vector etc complain
about just `unsigned` (which should default to int, of course).

tools/qfcc/source/qc-parse.y

@@ -181,6 +181,7 @@ int yylex (YYSTYPE *yylval, YYLTYPE *yylloc);
 %type	<symbol>	generic_param
 %type	<op>		type_func type_op
 %type	<expr>		type_function type_param type_ref
+%type	<spec>		type_ref_spec
 %type	<expr>		generic_type
 %type	<mut_expr>	type_list type_param_list
 
@@ -1250,7 +1251,7 @@ type_list
 	;
 
 type_ref
-	: TYPE_SPEC							{ $$ = new_type_expr ($1.type); }
+	: type_ref_spec						{ $$ = new_type_expr ($1.type); }
 	| CLASS_NAME						{ $$ = new_type_expr ($1->type); }
 	| TYPE_NAME
 		{
@@ -1262,6 +1263,11 @@ type_ref
 		}
 	;
 
+type_ref_spec
+	: TYPE_SPEC
+	| type_ref_spec TYPE_SPEC			{ $$ = spec_merge ($1, $2); }
+	;
+
 attribute_list
 	: attribute
 	| attribute_list ',' attribute