'oldest' and 'newest' to me make me thing of 'least recently inserted'
and 'most recently inserted', which is what they used to mean.
But now the expiration can be set per-request so the semantics don't
work anymore.
So, rename to 'nextExpiringNode' and 'lastExpiringNode'. Also rename the
node member elements "older" and "newer" to the more generic "previous"
and "next".
Change-Id: I582267d09c60c68396e4201e4a20185bbf0942e2
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
3a8f9286fc