move audioOutput plugins to audioOutput directory

src/Makefile.am

 bin_PROGRAMS = mpd
 SUBDIRS = $(ID3_SUBDIR) $(MAD_SUBDIR) $(MP4FF_SUBDIR)
 
+mpd_audioOutput = \
+	audioOutput/audioOutput_ao.c \
+	audioOutput/audioOutput_oss.c \
+	audioOutput/audioOutput_shout.c
+
 mpd_inputPlugins = \
 	inputPlugins/aac_plugin.c \
 	inputPlugins/audiofile_plugin.c \
@@ -54,12 +59,10 @@ mpd_headers = \
 
 mpd_SOURCES = \
 	$(mpd_headers) \
+	$(mpd_audioOutput) \
 	$(mpd_inputPlugins) \
 	audio.c \
 	audioOutput.c \
-	audioOutput_ao.c \
-	audioOutput_oss.c \
-	audioOutput_shout.c \
 	buffer2array.c \
 	charConv.c \
 	command.c \

src/audioOutput.h

@@ -26,8 +26,6 @@
 #include "tag.h"
 #include "conf.h"
 
-#define AUDIO_AO_DRIVER_DEFAULT	"default"
-
 typedef struct _AudioOutput AudioOutput;
 
 typedef int (* AudioOutputInitDriverFunc) (AudioOutput * audioOutput, 

src/audioOutput_ao.c → src/audioOutput/audioOutput_ao.c

@@ -16,10 +16,10 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#include "audioOutput.h"
-#include "conf.h"
-#include "log.h"
-#include "sig_handlers.h"
+#include "../audioOutput.h"
+#include "../conf.h"
+#include "../log.h"
+#include "../sig_handlers.h"
 
 #include <string.h>
 #include <assert.h>

src/audioOutput_oss.c → src/audioOutput/audioOutput_oss.c

@@ -18,16 +18,15 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#include "../config.h"
-#include "audioOutput.h"
+#include "../audioOutput.h"
 
 #include <stdlib.h>
 
 #ifdef HAVE_OSS
 
-#include "conf.h"
-#include "log.h"
-#include "sig_handlers.h"
+#include "../conf.h"
+#include "../log.h"
+#include "../sig_handlers.h"
 
 #include <string.h>
 #include <assert.h>

src/audioOutput_shout.c → src/audioOutput/audioOutput_shout.c

@@ -16,18 +16,17 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
-#include "../config.h"
+#include "../audioOutput.h"
 
-#include "audioOutput.h"
+#include <stdlib.h>
 
 #ifdef HAVE_SHOUT
 
-#include "conf.h"
-#include "log.h"
-#include "sig_handlers.h"
-#include "pcm_utils.h"
+#include "../conf.h"
+#include "../log.h"
+#include "../sig_handlers.h"
+#include "../pcm_utils.h"
 
-#include <stdlib.h>
 #include <string.h>
 #include <assert.h>
 #include <signal.h>
@@ -568,8 +567,6 @@ AudioOutputPlugin shoutPlugin =
 
 #else
 
-#include <stdlib.h>
-
 AudioOutputPlugin shoutPlugin = 
 {
 	NULL,