tests: Improve compatibility with other platforms

stat -c %s's equivalent on FreeBSD is stat -f %Uz; these differ enough, allow
STATSZ in the environment to specify local replacement for a stat that outputs
size in bytes of an argument.

Signed-off-by: Kyle Evans <kevans@FreeBSD.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
1 file changed