build: consolidate tsc to ease migration to @types/ based typings delivery

I actually tried to use @types/* directly but came across several issues which prevented me
from switching over:
- https://github.com/Microsoft/TypeScript/issues/8715
- https://github.com/Microsoft/TypeScript/issues/8723

modules/@angular/compiler_cli/integrationtest/typings.d.ts

@@ -1,2 +1,2 @@
-/// <reference path="../../typings/node/node.d.ts" />
-/// <reference path="../../typings/jasmine/jasmine.d.ts" />
+/// <reference path="../../../../typings/node/node.d.ts" />
+/// <reference path="../../../../typings/jasmine/jasmine.d.ts" />

modules/@angular/compiler_cli/tsconfig-es5.json

@@ -27,8 +27,8 @@
     "files": [
         "index.ts",
         "src/main.ts",
-        "../typings/node/node.d.ts",
-        "../typings/jasmine/jasmine.d.ts",
+        "../../../typings/node/node.d.ts",
+        "../../../typings/jasmine/jasmine.d.ts",
         "../../../node_modules/zone.js/dist/zone.js.d.ts"
     ]
 }