Original commit message from CVS:
* ext/x264/gstx264enc.c:
Fix build against the libx264 version that ships with debian stable.
encoder->x264param.b_deblocking_filter = 1;
encoder->x264param.i_deblocking_filter_alphac0 = 0;
encoder->x264param.i_deblocking_filter_beta = 0;
+#ifdef X264_RC_ABR
encoder->x264param.rc.i_rc_method = X264_RC_ABR;
+#endif
encoder->x264param.rc.i_bitrate = encoder->bitrate;
encoder->x264param.rc.i_vbv_max_bitrate = encoder->bitrate;
encoder->x264param.rc.i_vbv_buffer_size