Add missing API and fix wrong behavior

Add missing API and fix wrong behavior

1. Add request-callback feature
Usage)
	PackageManager.Install(packagePath, MyCallback1);
	PackageManager.Install(packagePath, tepPath, MyCallback1);
	PackageManager.Install(packagePath, tepPath, pkgType, MyCallback1);
	...
	PackageManager.Move(packageID, PackageType.TPK, StorageType.External, MyCallbackMove1);
	PackageManager.Move(packageID, PackageType.TPK, StorageType.Internal, MyCallbackMove2);
	PackageManager.Uninstall(packageID, PackageType.TPK, MyCallback2);
	...

2. Add Move, ClearData event
usage)
	private static EventHandler<PackageManagerEventArgs> PackageEventCallback;
	PackageEventCallback = (s, e) => { Log.Debug(TAG, "callback called"); };
	// set cb
	PackageManger.MoveProgressChanged += PackageEventCallback;
	PackageManger.ClearDataProgressChanged += PackageEventCallback;
	// unset cb
	PackageManger.MoveProgressChanged -= PackageEventCallback;
	PackageManger.ClearDataProgressChanged -= PackageEventCallback;

3. Fix wrong behavior of package-event handling.

Requires:
	https://review.tizen.org/gerrit/#/c/116315/
	https://review.tizen.org/gerrit/#/c/117332/

Change-Id: I31fa3eb35e7e56599e794221cd0e0120b297fb21
Signed-off-by: jongmyeongko <jongmyeong.ko@samsung.com>