Merge remote-tracking branch 'qatar/master'

* qatar/master:
  lavc: make avcodec_init() static on next bump.
  ac3enc: remove unneeded #include
  ac3enc: restructure coupling coordinate reuse calculation
  ac3enc: allow new coupling coordinates to be sent independently for each channel.
  ac3enc: separate exponent bit counting from exponent grouping.
  h264: propagate error return values for AV_LOG_ERROR-triggering events
  aac: Don't attempt to output configure an invalid channel configuration.

Merged-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/utils.c

@@ -1144,6 +1144,9 @@ const char *avcodec_license(void)
     return LICENSE_PREFIX FFMPEG_LICENSE + sizeof(LICENSE_PREFIX) - 1;
 }
 
+#if !FF_API_AVCODEC_INIT
+static
+#endif
 void avcodec_init(void)
 {
     static int initialized = 0;