The copyright and license notice is already in the LICENSE file. There
is no justifiable reason to also require that it be included in every
file, since the individual files are not individually distributed except
as part of the entire package.
This test is particularly pathological, and requires a ton of time to
run, we need to find a better way to manage it but in general this path
is fairly safe these days.
fs.read() and fs.write() can't handle more than 2GB files on 64bit platform.
Also fs.truncate() can't handle more than 4GB files.
Fixes#1199.
Fixes#1094.