renamed decoder plugin "oggvorbis" to "vorbis"

src/Makefile.am

@@ -279,7 +279,7 @@ mpd_SOURCES += decoder/wavpack_plugin.c
 endif
 
 if HAVE_FAAD
-mpd_SOURCES += decoder/aac_plugin.c
+mpd_SOURCES += decoder/faad_plugin.c
 endif
 
 if HAVE_MP4
@@ -295,7 +295,7 @@ mpd_SOURCES += decoder/_flac_common.c
 endif
 
 if HAVE_OGGVORBIS
-mpd_SOURCES += decoder/oggvorbis_plugin.c
+mpd_SOURCES += decoder/vorbis_plugin.c
 endif
 
 if HAVE_FLAC

src/decoder/oggvorbis_plugin.c → src/decoder/vorbis_plugin.c

@@ -407,7 +407,7 @@ static const char *const vorbis_mime_types[] = {
 };
 
 const struct decoder_plugin vorbis_decoder_plugin = {
-	.name = "oggvorbis",
+	.name = "vorbis",
 	.stream_decode = vorbis_stream_decode,
 	.tag_dup = vorbis_tag_dup,
 	.suffixes = vorbis_suffixes,