Allow user to stop a specs execution when an expectation fails

[finish #1165916] #577

src/core/requireCore.js

@@ -20,6 +20,7 @@ var getJasmineRequireObj = (function (jasmineGlobal) {
 
     jRequire.base(j$, jasmineGlobal);
     j$.util = jRequire.util();
+    j$.errors = jRequire.errors();
     j$.Any = jRequire.Any();
     j$.Anything = jRequire.Anything(j$);
     j$.CallTracker = jRequire.CallTracker();