[Libreoffice] [PATCH] use the correct tar binary on OpenBSD

[Tor Lillqvist]

The "outer" configure.in already takes a --with-gnu-tar option and sets the GNUTAR autoconf substitution, isn't it easier to use that, and make the indicated GNU tar propagate to bin/install-artwork some way? (Sourcing bin/setup and using $GNUTAR is probably the easiest way.) Probably it would be good to automate finding GNU tar on OpenBSD in configure.in, too.

--tml