* src/stream_output/stream_output.c, include/stream_output.h: added an i_padding field to sout_instance_t so we can allocate sout_buffers with a bit more space than asked for (needed for ffmpeg decoding).
* modules/stream_out/transcode.c: proper pts/dts generation. This allows the transcoder module to finally generate proper streams.
   Added support for b frames (bframe=x option) + couple of bug fixes.