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/platform/testing/browser_static.ts

@@ -15,7 +15,7 @@ import {MockAnimationBuilder} from 'angular2/src/mock/animation_builder_mock';
 import {MockDirectiveResolver} from 'angular2/src/mock/directive_resolver_mock';
 import {MockViewResolver} from 'angular2/src/mock/view_resolver_mock';
 import {MockLocationStrategy} from 'angular2/src/mock/mock_location_strategy';
-import {LocationStrategy} from 'angular2/src/router/location_strategy';
+import {LocationStrategy} from 'angular2/src/router/location/location_strategy';
 import {MockNgZone} from 'angular2/src/mock/ng_zone_mock';
 
 import {XHRImpl} from "angular2/src/platform/browser/xhr_impl";

modules/angular2/platform/testing/server.ts

@@ -16,7 +16,7 @@ import {MockAnimationBuilder} from 'angular2/src/mock/animation_builder_mock';
 import {MockDirectiveResolver} from 'angular2/src/mock/directive_resolver_mock';
 import {MockViewResolver} from 'angular2/src/mock/view_resolver_mock';
 import {MockLocationStrategy} from 'angular2/src/mock/mock_location_strategy';
-import {LocationStrategy} from 'angular2/src/router/location_strategy';
+import {LocationStrategy} from 'angular2/src/router/location/location_strategy';
 import {MockNgZone} from 'angular2/src/mock/ng_zone_mock';
 
 import {TestComponentBuilder} from 'angular2/src/testing/test_component_builder';