* gnulib-tool (create-testdir): don't complain if destdir couldn't
be created, only if it doesn't exist.
* gnulib-tool (last_checkin_date): don't expand the $Date here.
* gnulib-tool (create-testdir): don't complain if destdir couldn't
be created, only if it doesn't exist.
* gnulib-tool (last_checkin_date): don't expand the $Date here.