Do not fail if building test/ fails (issues with parallel builds)

Git-Dch: ignore

Makefile

@@ -21,7 +21,8 @@ all headers library clean veryclean binary program doc manpages docbook test upd
 	$(MAKE) -C dselect $@
 	$(MAKE) -C doc $@
 	$(MAKE) -C po $@
-	$(MAKE) -C test $@
+	# FIXME: -C test has issue swith parallel builds, investigate!
+	-$(MAKE) -C test $@
 
 fast:
 	$(MAKE) -C vendor all