encx264: remove duplicate logging (libx264 already logs the SAR), and log the average bitrate to be consistent (we log the RF in CRF mode).



git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5840 b64f7644-9d1e-0410-96f1-a4d463321fa5
encx264: don't log unparsed options if the string is NULL.



git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5841 b64f7644-9d1e-0410-96f1-a4d463321fa5
encx264: remove some long dead code.



git-svn-id: svn://svn.handbrake.fr/HandBrake/trunk@5842 b64f7644-9d1e-0410-96f1-a4d463321fa5