Add reminders to update the codec descriptor list with new codec IDs.

doc/developer.texi

@@ -404,6 +404,8 @@ send a reminder by email. Your patch should eventually be dealt with.
     Did you register it in @file{allcodecs.c} or @file{allformats.c}?
 @item
     Did you add the AVCodecID to @file{avcodec.h}?
+    When adding new codec IDs, also add an entry to the codec descriptor
+    list in @file{libavcodec/codec_desc.c}.
 @item
     If it has a fourcc, did you add it to @file{libavformat/riff.c},
     even if it is only a decoder?

libavcodec/avcodec.h

@@ -88,6 +88,9 @@
  * If you add a codec ID to this list, add it so that
  * 1. no value of a existing codec ID changes (that would break ABI),
  * 2. it is as close as possible to similar codecs.
+ *
+ * After adding new codec IDs, do not forget to add an entry to the codec
+ * descriptor list and bump libavcodec minor version.
  */
 enum AVCodecID {
     AV_CODEC_ID_NONE,