Squashed spy refactor and new spy syntax

Jasmine spies now have a 'and' property which allows the user to
change the spy's execution strategy-- such as '.and.callReturn(4)'
and a 'calls' property which allows inspection of the calls a spy
has received.

* This is a breaking change *

There is a CallTracker that keeps track of all calls and arguments
and a SpyStrategy which determines what the spy should do when it
is called.

spec/core/SuiteSpec.js

@@ -159,7 +159,7 @@ describe("Suite", function() {
 
     parentSuite.execute(parentSuiteDone);
 
-    var parentSuiteFns = fakeQueueRunnerForParent.mostRecentCall.args[0].fns;
+    var parentSuiteFns = fakeQueueRunnerForParent.calls.mostRecent().args[0].fns;
 
     parentSuiteFns[0]();
     expect(fakeSpec1.execute).toHaveBeenCalled();