chore: move core modules into core directory

BREAKING CHANGE:
    This change moves the http module into angular2/, so its import
    path is now angular2/http instead of http/http.

    Many other modules have also been moved around inside of angular2,
    but the public API paths have not changed as of this commit.

modules/angular2/http.ts

@@ -0,0 +1,87 @@
+/**
+ * @module
+ * @description
+ * The http module provides services to perform http requests. To get started, see the {@link Http}
+ * class.
+ */
+import {bind, Binding} from 'angular2/di';
+import {Http, Jsonp} from './src/http';
+import {XHRBackend, XHRConnection} from './src/backends/xhr_backend';
+import {JSONPBackend, JSONPConnection} from './src/backends/jsonp_backend';
+import {BrowserXhr} from './src/backends/browser_xhr';
+import {BrowserJsonp} from './src/backends/browser_jsonp';
+import {BaseRequestOptions, RequestOptions} from './src/base_request_options';
+import {ConnectionBackend} from './src/interfaces';
+import {BaseResponseOptions, ResponseOptions} from './src/base_response_options';
+
+export {MockConnection, MockBackend} from './src/backends/mock_backend';
+export {Request} from './src/static_request';
+export {Response} from './src/static_response';
+
+export {
+  RequestOptionsArgs,
+  ResponseOptionsArgs,
+  Connection,
+  ConnectionBackend
+} from './src/interfaces';
+
+export {BrowserXhr} from './src/backends/browser_xhr';
+export {BaseRequestOptions, RequestOptions} from './src/base_request_options';
+export {BaseResponseOptions, ResponseOptions} from './src/base_response_options';
+export {XHRBackend, XHRConnection} from './src/backends/xhr_backend';
+export {JSONPBackend, JSONPConnection} from './src/backends/jsonp_backend';
+export {Http, Jsonp} from './src/http';
+
+export {Headers} from './src/headers';
+
+export {
+  ResponseTypes,
+  ReadyStates,
+  RequestMethods,
+  RequestCredentialsOpts,
+  RequestCacheOpts,
+  RequestModesOpts
+} from './src/enums';
+export {URLSearchParams} from './src/url_search_params';
+
+/**
+ * Provides a basic set of injectables to use the {@link Http} service in any application.
+ *
+ * #Example
+ *
+ * ```
+ * import {HTTP_BINDINGS, Http} from 'http/http';
+ * @Component({selector: 'http-app', viewBindings: [HTTP_BINDINGS]})
+ * @View({template: '{{data}}'})
+ * class MyApp {
+ *   constructor(http:Http) {
+ *     http.request('data.txt').subscribe(res => this.data = res.text());
+ *   }
+ * }
+ * ```
+ *
+ */
+export const HTTP_BINDINGS: List<any> = [
+  // TODO(pascal): use factory type annotations once supported in DI
+  // issue: https://github.com/angular/angular/issues/3183
+  bind(Http)
+      .toFactory((xhrBackend, requestOptions) => { return new Http(xhrBackend, requestOptions);},
+                 [XHRBackend, RequestOptions]),
+  BrowserXhr,
+  bind(RequestOptions).toClass(BaseRequestOptions),
+  bind(ResponseOptions).toClass(BaseResponseOptions),
+  XHRBackend
+];
+
+export const JSONP_BINDINGS: List<any> = [
+  // TODO(pascal): use factory type annotations once supported in DI
+  // issue: https://github.com/angular/angular/issues/3183
+  bind(Jsonp)
+      .toFactory(
+          (jsonpBackend, requestOptions) => { return new Jsonp(jsonpBackend, requestOptions);},
+          [JSONPBackend, RequestOptions]),
+  BrowserJsonp,
+  bind(RequestOptions).toClass(BaseRequestOptions),
+  bind(ResponseOptions).toClass(BaseResponseOptions),
+  JSONPBackend
+];