Inject a per-runable pretty printer into MatchersUtil

This will allow us to add support for custom object formatters, which
will be a per-runable resource like custom matchers, by injecting them
into the pretty-printer.

spec/core/matchers/toHaveClassSpec.js

@@ -27,7 +27,9 @@ describe('toHaveClass', function() {
   });
 
   it('throws an exception when actual is not a DOM element', function() {
-    var matcher = jasmineUnderTest.matchers.toHaveClass();
+    var matcher = jasmineUnderTest.matchers.toHaveClass({
+      pp: jasmineUnderTest.makePrettyPrinter()
+    });
 
     expect(function() {
       matcher.compare('x', 'foo');