Revert "Revert "Revert "frameworks: add keyguard wallpaper functionality to WallpaperManager"""

This reverts commit 554fe25e0f85812e9f83648e545ec6ba04c2e002.

	modified:   core/java/android/app/IWallpaperManager.aidl
	modified:   core/java/android/app/IWallpaperManagerCallback.aidl
	modified:   core/java/android/app/WallpaperManager.java
	modified:   core/java/android/content/Intent.java
	modified:   core/java/android/view/IWindowManager.aidl
	modified:   core/java/android/view/WindowManagerPolicy.java
	modified:   core/res/AndroidManifest.xml
	deleted:    core/res/res/anim/lock_screen_wallpaper_exit_noop.xml
	modified:   core/res/res/values/slim_strings.xml
	modified:   core/res/res/values/symbols.xml
	modified:   packages/SystemUI/src/com/android/systemui/keyguard/KeyguardViewMediator.java
	modified:   packages/SystemUI/src/com/android/systemui/statusbar/phone/PhoneStatusBar.java
	modified:   packages/SystemUI/src/com/android/systemui/statusbar/phone/StatusBarKeyguardViewManager.java
	modified:   policy/src/com/android/internal/policy/impl/PhoneWindowManager.java
	modified:   services/core/java/com/android/server/wallpaper/WallpaperManagerService.java
	modified:   services/core/java/com/android/server/wm/WindowAnimator.java
	modified:   services/core/java/com/android/server/wm/WindowManagerService.java