No more ambient modules for tns-core-modules/* subpackages.

- Use path mappings in tsconfig.json to resolve module typings
- Only use ambient mobules for global API's
- Move single-file modules to a subdir with the same name so that
we can provide a hand-written typing next to it (via package.json)
- Delete all mentions of tns-core-modules.d.ts
- Delete reference d.ts assembly build steps. Not needed anymore.
- HACK! Use a <reference> for global typings in application.d.ts
to avoid publishing a separate @types/tns-core-modules package.
- Rename declarations.d.ts to tns-core-modules.d.ts to preserve
JS project mappings in references.d.ts (the only place we use those)

tests/app/http-string-worker.ts

@@ -1,5 +1,5 @@
 require("globals");
-import http = require("http");
+import * as http from "tns-core-modules/http";
 
 declare var postMessage : any;
 
@@ -7,4 +7,4 @@ http.getString("https://httpbin.org/get").then(function (r) {
     postMessage(r);
 }, function (e) {
     throw e;
-});
+});

tests/app/http-tests.ts

@@ -1,6 +1,6 @@
 /* tslint:disable:no-unused-variable */
 import * as TKUnit from "./TKUnit";
-import * as http from "http";
+import * as http from "tns-core-modules/http";
 import * as types from "utils/types";
 import * as fs from "file-system";
 import { addHeader } from "http/http-request";
@@ -650,4 +650,4 @@ export var test_getString_WorksProperlyInWorker = function () {
     }
 
     TKUnit.waitUntilReady(() => ready);
-}
+}

tests/app/navigation/transition-tests.ts

@@ -3,13 +3,13 @@ import * as helper from "../ui/helper";
 import * as platform from "platform";
 import * as trace from "trace";
 import { Color } from "color";
-import { NavigationEntry, NavigationTransition, topmost as topmostFrame, traceEnabled } from "ui/frame";
+import { NavigationEntry, NavigationTransition, topmost as topmostFrame } from "ui/frame";
 import { Page } from "ui/page";
 import { AnimationCurve } from "ui/enums"
 
 function _testTransition(navigationTransition: NavigationTransition) {
     var testId = `Transition[${JSON.stringify(navigationTransition)}]`;
-    if (traceEnabled()) {
+    if (trace.isEnabled()) {
         trace.write(`Testing ${testId}`, trace.categories.Test);
     }
     var navigationEntry: NavigationEntry = {

tests/app/pages/page8.ts

@@ -4,7 +4,7 @@ import * as stacks from "ui/layouts/stack-layout";
 import * as scroll from "ui/scroll-view";
 import * as textView from "ui/text-view";
 import * as timer from "timer";
-import * as http from "http";
+import * as http from "tns-core-modules/http";
 import * as trace from "trace";
 trace.enable();
 trace.setCategories(trace.categories.Style);
@@ -63,4 +63,4 @@ export function createPage() {
     return page;
 }
 
-//export var Page = page;
+//export var Page = page;

tests/app/xml-declaration/mainPage.ts

@@ -2,7 +2,7 @@ import * as observable from "data/observable";
 import * as view from "ui/core/view";
 import * as label from "ui/label";
 import * as pages from "ui/page";
-import * as http from "http";
+import * as http from "tns-core-modules/http";
 
 var obj = new observable.Observable();
 obj.set("id", 0);
@@ -53,4 +53,4 @@ export function MyPageLoaded(args: observable.EventData) {
 
 export function setPicture(args: observable.EventData) {
     // 
-}
+}