Replace calls/references of the deprecated register_protocol()

function with correponding calls/references to av_register_protocol().

Originally committed as revision 17323 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/allformats.c

@@ -34,7 +34,7 @@
 
 #define REGISTER_PROTOCOL(X,x) { \
     extern URLProtocol x##_protocol; \
-    if(CONFIG_##X##_PROTOCOL) register_protocol(&x##_protocol); }
+    if(CONFIG_##X##_PROTOCOL) av_register_protocol(&x##_protocol); }
 
 void av_register_all(void)
 {

libavformat/avformat.h

@@ -776,7 +776,7 @@ void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload);
  *
  * @see av_register_input_format()
  * @see av_register_output_format()
- * @see register_protocol()
+ * @see av_register_protocol()
  */
 void av_register_all(void);