fix(angular2): export PrivateComponent{Loader,Location} in angular2/core

Author: ajoslin

modules/angular2/core.js

@@ -7,6 +7,8 @@ export * from './src/core/annotations/di';
 export * from './src/core/compiler/compiler';
 
 export * from './src/core/compiler/template_loader';
+export * from './src/core/compiler/private_component_loader';
+export * from './src/core/compiler/private_component_location';
 export * from './src/core/compiler/view';
 export * from './src/core/compiler/view_container';