Add parens around printed IR so it's an official list of instructions.

glsl_parser_extras.cpp

@@ -776,12 +776,14 @@ main(int argc, char **argv)
    printf("\n\n");
 
    if (!state.error) {
+      printf("(\n");
       foreach_iter(exec_list_iterator, iter, instructions) {
 	 ir_print_visitor v;
 
 	 ((ir_instruction *)iter.get())->accept(& v);
 	 printf("\n");
       }
+      printf("\n)");
    }
 
    delete state.symbols;