add hideStack testcase

Author: sokra

test/cases/compile/error-hide-stack/errors.js

@@ -0,0 +1,3 @@
+module.exports = [
+	[/Module build failed: Message\nStack/]
+];

test/cases/compile/error-hide-stack/index.js

@@ -0,0 +1,5 @@
+it("should hide stack in details", function() {
+	(function f() {
+		require("./loader!");
+	}).should.throw();
+});

test/cases/compile/error-hide-stack/loader.js

@@ -0,0 +1,6 @@
+module.exports = function() {
+	var err = new Error("Message");
+	err.stack = "Stack";
+	err.hideStack = true;
+	throw err;
+};