This fixes extensive copying data around, and also makes head(1) in
bytes mode read exactly as much data as it needs.
Also, rename --characters to --bytes: that's exactly what it does
(actual character counting is way more complicated), and that's what
the option is called in GNU coreutils.
Fixes https://github.com/SerenityOS/serenity/issues/6852
SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
