Move German tones from common code to individual implementation

src/bnetz/Makefile.am

@@ -1,3 +1,4 @@
+AUTOMAKE_OPTIONS = subdir-objects
 AM_CPPFLAGS = -Wall -Wextra -g $(all_includes)
 
 bin_PROGRAMS = \
@@ -9,6 +10,8 @@ bnetz_SOURCES = \
 	dsp.c \
 	stations.c \
 	image.c \
+	$(top_builddir)/src/anetz/freiton.c \
+	$(top_builddir)/src/anetz/besetztton.c \
 	ansage.c \
 	main.c
 bnetz_LDADD = \

src/bnetz/main.c

@@ -28,8 +28,8 @@
 #include "../common/call.h"
 #include "../common/mncc_sock.h"
 #include "../common/main.h"
-#include "../common/freiton.h"
-#include "../common/besetztton.h"
+#include "../anetz/freiton.h"
+#include "../anetz/besetztton.h"
 #include "bnetz.h"
 #include "dsp.h"
 #include "stations.h"