bootstrap: support sha1 binary on OpenBSD.
* gl/build-aux/bootstrap.in (func_update_po_files): Remove the
use of --status in a way that will suppress all error messages,
but since this is only used to minimize updates, it shouldn't
cause an issue.
Look for a sha1 binary if the other SHA1SUM settings are not
found.
Also exit early if there is a problem updating the po file
checksums.
* bootstrap: Regenerate.
Ported from a gnulib patch by Padraig Brady.
Signed-off-by: Gary V. Vaughan <gary@gnu.org>