PIE: exiting pie panels in landscape

Change-Id: I97a1e268eadd11518b5cbb28c048f187240bbae5
PIE: new, awesome repositioning system, better animations, better

looking snappoints, pie can be centered or appear where the swipe-up
happens, onconfigchanged bugfixes, panelswipe will not accidentally
trigger pie reposition

Change-Id: Ia1c3f4caee5432a6ab5d85e2e9e5b638471dc032