This patch is to address concerns that changes to allow
recodes on the first frame in each ARF group do not give a
good enough speed quality trade off for speed 2. Though the
average impact  on encode speed is 1-2%, for some hard clips
it is > 5% rise.  For speed 1 this is less an issue and for Speed 0
the previous patch actually  improves speed.

Change-Id: Ie1bcefdbfdf846d3f4428590173f621465dffe3a