Manage spys/matchers/custom equalities for beforeAll

- Refactor expectations to take list of matchers
- Add spyRegistry to manage runnables' spies
- Add clone util

[#66789174]

src/core/util.js

@@ -30,5 +30,20 @@ getJasmineRequireObj().util = function() {
     return obj === void 0;
   };
 
+  util.clone = function(obj) {
+    if (Object.prototype.toString.apply(obj) === "[object Array]") {
+      return obj.slice();
+    }
+
+    var cloned = {};
+    for (var prop in obj) {
+      if (obj.hasOwnProperty(prop)) {
+        cloned[prop] = obj[prop];
+      }
+    }
+
+    return cloned;
+  }
+
   return util;
 };