Hardcode storage path as /var/lib/fprint

--localstatedir (and --prefix) will now be ignored in favour of this
hardcoded path.  This is in preparation for a change to use systemd's
StateDirectory feature.

src/Makefile.am

@@ -13,8 +13,7 @@ AM_CFLAGS =						\
 	$(DAEMON_CFLAGS)				\
 	-DG_LOG_DOMAIN=\""fprintd"\"			\
 	-DLOCALEDIR=\""$(datadir)/locale"\"		\
-	-DPLUGINDIR=\""$(libdir)/fprintd/modules"\"	\
-	-DFILE_STORAGE_PATH=\""$(localstatedir)/lib/fprint"\"
+	-DPLUGINDIR=\""$(libdir)/fprintd/modules"\"
 
 libfprintd_la_SOURCES =				\
 	manager.c device.c			\

src/file_storage.c

@@ -39,6 +39,7 @@
 
 #include "file_storage.h"
 
+#define FILE_STORAGE_PATH "/var/lib/fprint"
 #define DIR_PERMS 0700
 
 #define FP_FINGER_IS_VALID(finger) \