Re-export Md prefixed classes as deprecated

Author: jelbourn

src/lib/core/core.ts

@@ -33,6 +33,9 @@ export * from './projection/projection';
 export * from './platform/platform';
 export * from './platform/features';
 
+/** @deprecated */
+export {Platform as MdPlatform} from './platform/platform';
+
 // Overlay
 export {Overlay, OVERLAY_PROVIDERS} from './overlay/overlay';
 export {OverlayContainer} from './overlay/overlay-container';
@@ -59,6 +62,9 @@ export {
   LIVE_ANNOUNCER_ELEMENT_TOKEN,
 } from './a11y/live-announcer';
 
+/** @deprecated */
+export {LiveAnnouncer as MdLiveAnnouncer} from './a11y/live-announcer';
+
 export {FocusTrap} from './a11y/focus-trap';
 export {InteractivityChecker} from './a11y/interactivity-checker';
 export {isFakeMousedownFromScreenReader} from './a11y/fake-mousedown';
@@ -70,6 +76,11 @@ export {
   UniqueSelectionDispatcherListener
 } from './coordination/unique-selection-dispatcher';
 
+/** @deprecated */
+export {
+  UniqueSelectionDispatcher as MdUniqueSelectionDispatcher
+} from './coordination/unique-selection-dispatcher';
+
 export {MdLineModule, MdLine, MdLineSetter} from './line/line';
 
 // Style