OpenBLAS

Do not requires GNU mktemp

Historically the GNU mktemp was the first one which doesn't requires
`-t` to create a directory.

Here I've introduced a fallback when `-t` is required.

For example MacPorts contains similar patch: https://github.com/macports/macports-ports/blob/bbe8abfe26651cc46d496bf48ecda506faa40a4a/math/OpenBLAS/files/patch-MacOSX-mktemp.diff