Restructure: Move goertzel from common code to 'libgoertzel'

src/anetz/Makefile.am

@@ -11,6 +11,7 @@ anetz_SOURCES = \
 	main.c
 anetz_LDADD = \
 	$(COMMON_LA) \
+	$(top_builddir)/src/libgoertzel/libgoertzel.a \
 	$(top_builddir)/src/libjitter/libjitter.a \
 	$(top_builddir)/src/libsquelch/libsquelch.a \
 	$(top_builddir)/src/libgermanton/libgermanton.a \

src/anetz/anetz.h

@@ -1,5 +1,5 @@
 #include "../libsquelch/squelch.h"
-#include "../common/goertzel.h"
+#include "../libgoertzel/goertzel.h"
 #include "../common/sender.h"
 
 enum dsp_mode {