[x265] cli: add --ipratio and --pbratio

[Derek Buitenhuis]

On 6/26/2014 8:22 AM, Satoshi Nakagawa wrote:
> # HG changeset patch
> # User Satoshi Nakagawa <nakagawa424 at oki.com>
> # Date 1403706071 -32400
> #      Wed Jun 25 23:21:11 2014 +0900
> # Node ID 3ca045895945f0afc6b4d1b1868feb00382796a3
> # Parent  09450ac6dc7d0f495582bf327488612755df1719
> cli: add --ipratio and --pbratio

OK patch-wise.

I'm not entirely sure of the value of exposing such options myself,
since usually it's a case of "please don't touch these options" anyway,
but it's already an API option anyway, so, OK.

Cheers,
- Derek