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.

src/core/matchers/toHaveBeenCalled.js

@@ -13,11 +13,11 @@ getJasmineRequireObj().toHaveBeenCalled = function(j$) {
           throw new Error('toHaveBeenCalled does not take arguments, use toHaveBeenCalledWith');
         }
 
-        result.pass = actual.wasCalled;
+        result.pass = actual.calls.any();
 
         result.message = result.pass ?
-          "Expected spy " + actual.identity + " not to have been called." :
-          "Expected spy " + actual.identity + " to have been called.";
+          "Expected spy " + actual.and.identity() + " not to have been called." :
+          "Expected spy " + actual.and.identity() + " to have been called.";
 
         return result;
       }

src/core/matchers/toHaveBeenCalledWith.js

@@ -12,13 +12,13 @@ getJasmineRequireObj().toHaveBeenCalledWith = function(j$) {
         }
 
         return {
-          pass: util.contains(actual.argsForCall, expectedArgs)
+          pass: util.contains(actual.calls.allArgs(), expectedArgs)
         };
       },
       message: function(actual) {
         return {
-          affirmative: "Expected spy " + actual.identity + " to have been called.",
-          negative: "Expected spy " + actual.identity + " not to have been called."
+          affirmative: "Expected spy " + actual.and.identity() + " to have been called.",
+          negative: "Expected spy " + actual.and.identity() + " not to have been called."
         };
       }
     };