chore(build): Fix .d.ts generation errors caused by invisible types of exported declarations

Fixes #3098

modules/angular2/src/change_detection/parser/lexer.ts

@@ -8,7 +8,7 @@ import {
   isPresent
 } from "angular2/src/facade/lang";
 
-enum TokenType {
+export enum TokenType {
   CHARACTER,
   IDENTIFIER,
   KEYWORD,

modules/angular2/src/directives/ng_for.ts

@@ -123,7 +123,7 @@ export class NgFor {
   }
 }
 
-class RecordViewTuple {
+export class RecordViewTuple {
   view: ViewRef;
   record: any;
   constructor(record, view) {

modules/angular2/src/render/dom/compiler/selector.ts

@@ -338,14 +338,14 @@ export class SelectorMatcher {
 }
 
 
-class SelectorListContext {
+export class SelectorListContext {
   alreadyMatched: boolean = false;
 
   constructor(public selectors: CssSelector[]) {}
 }
 
 // Store context to pass back selector and context when a selector is matched
-class SelectorContext {
+export class SelectorContext {
   notSelectors: CssSelector[];
 
   constructor(public selector: CssSelector, public cbContext: any,

modules/angular2/src/render/dom/dom_renderer.ts

@@ -270,4 +270,4 @@ function moveChildNodes(source: Node, target: Node) {
     DOM.appendChild(target, currChild);
     currChild = nextChild;
   }
-}
+}