Log Message:
Update to 2.3.0:

The list of fixed bugs:

* Fixed make install for po directory
* Fixed Ffv1rec
* Fix for multiple gthread_init call (aakef)
* Better audio dithering (Mihail+Josh Green)
* Support for DV in .mov/.mp4
* Resample crash fix when upsampling (a nasty one).
* PCM in .mov/.mp4 sample size fix
* Fix for MP4/MOV files containing .url field
* Added smartcopy from cli or from javascript
* Fix encoding x264 with use bframe as reference + output to mp4