Don't reset saved playback position if playback resource is denied.

Don't reset saved playback position if playback resource is denied.

Resource denied and resource lost should be handled differently,
on resource lost the current playback position should be preserved,
while on resource denied player state should be changed to paused
with pending position unchanged.

(from qtmobility, SHA1 4e457432ef0f50cb91a1043f0390427cafcaef0d)

Change-Id: I5ce755409c430598d68ee6a6a90f9d0858ea9da9
Reviewed-by: Dmytro Poplavskiy <dmytro.poplavskiy@nokia.com>