Test case 'unused' tag fixes

The new fastint detection works for both old and new packed boolean tag
(0xfff4 in Duktape 1.3.0, 0xfff5 now).

tests/api/test-dump-load-fastint.c

@@ -23,7 +23,7 @@ static duk_ret_t test_1(duk_context *ctx) {
 	duk_eval_string_noresult(ctx,
 		"Object.defineProperty(Duktape, 'fastintTag', {\n"
 		"    /* Tag number depends on duk_tval packing. */\n"
-		"    value: (Duktape.info(true)[1] === 0xfff4) ?\n"
+		"    value: (Duktape.info(true)[1] >= 0xfff0) ?\n"
 		"            0xfff1 /* tag for packed duk_tval */ :\n"
 		"            1 /* tag for unpacked duk_tval */,\n"
 		"    writable: false,\n"

tests/ecmascript/test-dev-fastint-basic.js

@@ -90,7 +90,7 @@ function printFastint(v) {
 
     if (typeof Duktape !== 'object') {
         isfast = ' NOT-DUKTAPE';
-    } else if (Duktape.info(true)[1] === 0xfff4) {
+    } else if (Duktape.info(true)[1] >= 0xfff0) {
         // packed duk_tval
         if (Duktape.info(v)[1] === 0xfff1) {
             isfast = ' fastint';