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)

tns-core-modules/ui/switch/package.json

@@ -1,2 +1,5 @@
-{ "name" : "switch",
-  "main" : "switch" }
+{
+  "name" : "switch",
+  "main" : "switch",
+  "types" : "switch.d.ts"
+}

tns-core-modules/ui/switch/switch.d.ts

@@ -1,32 +1,30 @@
 /**
  * Contains the Switch class, which represents a standard switch component.
  */
-declare module "ui/switch" {
-    import { View, Property } from "ui/core/view";
+import { View, Property } from "ui/core/view";
+
+/**
+ * Represents a switch component.
+ */
+export class Switch extends View {
 
     /**
-     * Represents a switch component.
+     * Gets the native [android widget](http://developer.android.com/reference/android/widget/Switch.html) that represents the user interface for this component. Valid only when running on Android OS.
      */
-    export class Switch extends View {
-
-        /**
-         * Gets the native [android widget](http://developer.android.com/reference/android/widget/Switch.html) that represents the user interface for this component. Valid only when running on Android OS.
-         */
-        android: any /* android.widget.Switch */;
-
-        /**
-         * Gets the native iOS [UISwitch](https://developer.apple.com/library/ios/documentation/UIKit/Reference/UISwitch_Class/) that represents the user interface for this component. Valid only when running on iOS.
-         */
-        ios: any /* UISwitch */;
-
-        /**
-         * Gets or sets if a switch is checked or not.
-         */
-        checked: boolean;
-    }
+    android: any /* android.widget.Switch */;
 
     /**
-     * Represents the observable property backing the checked property of each Switch instance.
+     * Gets the native iOS [UISwitch](https://developer.apple.com/library/ios/documentation/UIKit/Reference/UISwitch_Class/) that represents the user interface for this component. Valid only when running on iOS.
      */
-    export const checkedProperty: Property<Switch, boolean>;
-}
+    ios: any /* UISwitch */;
+
+    /**
+     * Gets or sets if a switch is checked or not.
+     */
+    checked: boolean;
+}
+
+/**
+ * Represents the observable property backing the checked property of each Switch instance.
+ */
+export const checkedProperty: Property<Switch, boolean>;