feat(router): add regex matchers

@petebacondarwin deserves credit for most of this commit.

This allows you to specify a regex and serializer function instead
of the path DSL in your route declaration.

```
@RouteConfig([
  { regex: '[a-z]+.[0-9]+',
    serializer: (params) => `{params.a}.params.b}`,
    component: MyComponent }
])
class Component {}
```

Closes #7325
Closes #7126

modules/angular2/src/platform/worker_render_common.ts

@@ -36,7 +36,7 @@ import {BrowserDomAdapter} from './browser/browser_adapter';
 import {wtfInit} from 'angular2/src/core/profile/wtf_init';
 import {MessageBasedRenderer} from 'angular2/src/web_workers/ui/renderer';
 import {MessageBasedXHRImpl} from 'angular2/src/web_workers/ui/xhr_impl';
-import {BrowserPlatformLocation} from 'angular2/src/router/browser_platform_location';
+import {BrowserPlatformLocation} from 'angular2/src/router/location/browser_platform_location';
 import {
   ServiceMessageBrokerFactory,
   ServiceMessageBrokerFactory_