COSMETICS, add missing remarks crediting Ben and Kenan

Originally committed as revision 16003 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/qcelp_lsp.c

@@ -23,6 +23,8 @@
  * @file qcelp_lsp.c
  * QCELP decoder
  * @author Reynaldo H. Verdejo Pinochet
+ * @remark FFmpeg merging spearheaded by Kenan Gillet
+ * @remark Development mentored by Benjamin Larson
  */
 
 #include "libavutil/mathematics.h"

libavcodec/qcelpdata.h

@@ -27,6 +27,7 @@
  * Data tables for the QCELP decoder
  * @author Reynaldo H. Verdejo Pinochet
  * @remark FFmpeg merging spearheaded by Kenan Gillet
+ * @remark Development mentored by Benjamin Larson
  */
 
 #include <stddef.h>

libavcodec/qcelpdec.c

@@ -24,6 +24,7 @@
  * QCELP decoder
  * @author Reynaldo H. Verdejo Pinochet
  * @remark FFmpeg merging spearheaded by Kenan Gillet
+ * @remark Development mentored by Benjamin Larson
  */
 
 #include <stddef.h>