Prefer shar over par

[mknos]

• par is a variant of shar which has the option -z to behave like shar
• par is perl-specific and not a standard unix command
• FreeBSD has a par command related to text formatting, but this is not common to other BSDs or Linux
• par seems a poor fit for this repo, especially given that shar works again

[briandfoy]

Let me think about this for a bit. I understand your point but I don't know if I agree with it just yet. We've distributed par for so long that I might want to keep it. Going forward, I'd certainly prefer to not add special tools like that.

[briandfoy]

We'll keep par, mostly for historical reasons. If someone was using it, I don't want to take it away from them. This is a good suggestion otherwise.