stored_playlist: de-CamelCase moved function

Rename addToStoredPlaylist() to spl_append_uri(), and remove the
clearStoredPlaylist() macro.

src/command.c

@@ -1115,7 +1115,7 @@ static int handlePlaylistClear(struct client *client,
 {
 	enum playlist_result result;
 
-	result = clearStoredPlaylist(argv[1]);
+	result = spl_clear(argv[1]);
 	return print_playlist_result(client, result);
 }
 
@@ -1127,7 +1127,7 @@ static int handlePlaylistAdd(struct client *client,
 	enum playlist_result result;
 
 	if (isRemoteUrl(path))
-		result = addToStoredPlaylist(path, playlist);
+		result = spl_append_uri(path, playlist);
 	else
 		result = addAllInToStoredPlaylist(path, playlist);
 

src/stored_playlist.c

@@ -317,7 +317,8 @@ spl_append_song(const char *utf8path, struct song *song)
 	return PLAYLIST_RESULT_SUCCESS;
 }
 
-int addToStoredPlaylist(const char *url, const char *utf8file)
+int
+spl_append_uri(const char *url, const char *utf8file)
 {
 	struct song *song;
 

src/stored_playlist.h

@@ -33,15 +33,14 @@ spl_move_index(const char *utf8path, int src, int dest);
 enum playlist_result
 spl_clear(const char *utf8path);
 
-#define clearStoredPlaylist spl_clear
-
 enum playlist_result
 spl_remove_index(const char *utf8path, int pos);
 
 enum playlist_result
 spl_append_song(const char *utf8path, struct song *song);
 
-int addToStoredPlaylist(const char *file, const char *utf8file);
+int
+spl_append_uri(const char *file, const char *utf8file);
 
 enum playlist_result
 spl_rename(const char *utf8from, const char *utf8to);