chore(core): move compiler out of core

BREAKING CHANGE

All imports from 'angular2/core/compiler' should be changed to 'angular2/compiler'.

modules/angular2/test/core/linker/integration_spec.ts

@@ -92,7 +92,7 @@ import {ElementRef} from 'angular2/src/core/linker/element_ref';
 import {TemplateRef} from 'angular2/src/core/linker/template_ref';
 
 import {DomRenderer} from 'angular2/src/core/render/dom/dom_renderer';
-import {IS_DART} from '../../platform';
+import {IS_DART} from 'angular2/src/core/facade/lang';
 
 const ANCHOR_ELEMENT = CONST_EXPR(new OpaqueToken('AnchorElement'));
 

modules/angular2/test/core/linker/query_list_spec.ts

@@ -10,10 +10,8 @@ import {
   fakeAsync,
   tick
 } from 'angular2/testing_internal';
-import {IS_DART} from '../../platform';
-
 import {MapWrapper, ListWrapper, iterateListLike} from 'angular2/src/core/facade/collection';
-import {StringWrapper} from 'angular2/src/core/facade/lang';
+import {IS_DART, StringWrapper} from 'angular2/src/core/facade/lang';
 import {ObservableWrapper} from 'angular2/src/core/facade/async';
 import {QueryList} from 'angular2/src/core/linker/query_list';
 import {DOM} from 'angular2/src/core/dom/dom_adapter';