begin to separate potentially shared code into library

lib/Makefile.am

@@ -0,0 +1,6 @@
+lib_LTLIBRARIES = libyasnd.la
+libyasnd_la_SOURCES = libyasnd.c
+libyasnd_la_CPPFLAGS = -I$(top_srcdir)
+
+distclean-local:
+	rm -f Makefile.in &>/dev/null

lib/libyasnd.c

@@ -0,0 +1,5 @@
+#include "yasnd.h"
+
+void lib_init()
+{
+}