use jasmineMatches for equality testing of complicated matchers

src/core/Env.js

@@ -230,12 +230,12 @@ jasmine.Env.prototype.equals_ = function(a, b, mismatchKeys, mismatchValues) {
     return a.getTime() == b.getTime();
   }
 
-  if (a instanceof jasmine.Matchers.Any) {
-    return a.matches(b);
+  if (a.jasmineMatches) {
+    return a.jasmineMatches(b);
   }
 
-  if (b instanceof jasmine.Matchers.Any) {
-    return b.matches(a);
+  if (b.jasmineMatches) {
+    return b.jasmineMatches(a);
   }
 
   if (a instanceof jasmine.Matchers.ObjectContaining) {

src/core/Matchers.js

@@ -345,7 +345,7 @@ jasmine.Matchers.Any = function(expectedClass) {
   this.expectedClass = expectedClass;
 };
 
-jasmine.Matchers.Any.prototype.matches = function(other) {
+jasmine.Matchers.Any.prototype.jasmineMatches = function(other) {
   if (this.expectedClass == String) {
     return typeof other == 'string' || other instanceof String;
   }

src/core/PrettyPrinter.js

@@ -23,7 +23,7 @@ jasmine.PrettyPrinter.prototype.format = function(value) {
       this.emitScalar('null');
     } else if (value === jasmine.getGlobal()) {
       this.emitScalar('<global>');
-    } else if (value.hasOwnProperty("jasmineToString")) {
+    } else if (value.jasmineToString) {
       this.emitScalar(value.jasmineToString());
     } else if (typeof value === 'string') {
       this.emitString(value);