Move shared test cases into lib folder

Since new versions of npm respect the .npmignore even when it comes
from git urls, we need to move the shared test cases into the lib folder
in order to provide these cases to other modules which port rewire's
functionality to other environments.

As discussed at jhnns/rewire-webpack#18

Author: jhnns

test/testModules/debuggerModule.js renamed to lib/testModules/debuggerModule.js

@@ -1,7 +1,7 @@
-"use strict"; // run code in ES5 strict mode
-
-var myNumber = 0;
-
-module.exports = function () {
-    myNumber = 1;
+"use strict"; // run code in ES5 strict mode
+
+var myNumber = 0;
+
+module.exports = function () {
+    myNumber = 1;
 };

test/testModules/emptyModule.js renamed to lib/testModules/emptyModule.js

@@ -1,5 +1,5 @@
-"use strict"; // run code in ES5 strict mode
-
-var someVar;
-
+"use strict"; // run code in ES5 strict mode
+
+var someVar;
+
 // Comment on file end. Hope this won't break anything

test/testModules/implicitGlobal.js renamed to lib/testModules/implicitGlobal.js

@@ -1,7 +1,7 @@
-"use strict"; // run code in ES5 strict mode
-
-function doSomethingUnstrict() {
-    var caller = arguments.callee.caller;   // this should throw an error as a proof that strict mode is on
-}
-
+"use strict"; // run code in ES5 strict mode
+
+function doSomethingUnstrict() {
+    var caller = arguments.callee.caller;   // this should throw an error as a proof that strict mode is on
+}
+
 exports.doSomethingUnstrict = doSomethingUnstrict;