multiwindow: bugfixes

- activity->dialog: solved
- fullscreen animation: solved

Change-Id: I1049fb6ba8739774762e3108747b3f2471b61971
multiwindow: badparcel exception

Change-Id: I0623d74d69b35cf9ba81b9733c4a9ab8a7d473b1
multiwindow: FLAG_MULTI_WINDOW

Change-Id: Ifbb6bf5ad5cca5d72f6f44d1ae28890f013ad0c1