Convert to autotools

Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
diff --git a/Makefile.am b/Makefile.am
new file mode 100644
index 0000000..2b86e66
--- /dev/null
+++ b/Makefile.am
@@ -0,0 +1,6 @@
+ACLOCAL_AMFLAGS = -I m4
+sbin_PROGRAMS = mboxd
+
+mboxd_SOURCES = mboxd.c common.c
+mboxd_LDFLAGS = $(SYSTEMD_LIBS)
+mboxd_CFLAGS = $(SYSTEMD_CFLAGS)