* compositor.h: Update prototypes.
* idle_inhibit.c (DestroyIdleInhibitManager): New function.
(idle_inhibit_manager_impl): Add missing op handler.
* seat.c (struct _Seat): Remove pointer unlock surface. Add
last_seen_subcompositor.
(ReleaseSeat): Release the last seen subcompositor callback.
(ClearPointerUnlockSurface, SwapUnlockSurface): Delete
functions.
(HandleSubcompositorDestroy): New function.
(EnteredSurface): Stop calling SwapUnlockSurface.
(DispatchEntryExit): Set the last seen subcompositor.
(DispatchMotion, CancelGrab1, CancelGrab): Use the last seen
subcompositor to decide where to unlock instead.
(LockSurfaceFocus, DispatchButton, DispatchGesturePinch)
(DispatchGestureSwipe): Stop calling SwapUnlockSurface.
(FakePointerEdge, ForceEntry): Stop calling SwapUnlockSurface.
* subcompositor.c (struct _SubcompositorDestroyCallback): New
struct.
(struct _Subcompositor): New field `destroy_callbacks'.
(MakeSubcompositor): Initialize new field.
(SubcompositorFree): Run and free destroy callbacks.
(SubcompositorOnDestroy, SubcompositorRemoveDestroyCallback):
New functions.
* tests/run_tests.sh:
* tests/select_test.c (verify_sample_text_multiple): Fix
ommissions and typos.
* compositor.h: Update prototypes.
* idle_inhibit.c (DetectSurfaceIdleInhibit): Handle subsurfaces;
when an inhibitor attached to a subsurface is displayed, check
if the subsurface's root is focused or not.
(CreateInhibitor): Likewise; handle subsurfaces specially.
* subcompositor.c (ViewisVisible): New function.
* subsurface.c (struct _Subsurface): New field `mapped'.
(Commit, Teardown): Update idle inhibition when the surface is
mapped or unmapped.
(XLSubsurfaceGetRoot): New function.
