bug#34488: Add sort --limit, or document workarounds for sort|head error messages

[積丹尼 Dan Jacobson]

Thanks for working on this guys, hopefully users will one day no longer
be faced with (yes, seemingly) random errors.
$ ls -l | sed 2!d
drwxr-xr-x 14 jidanni jidanni      4096 2016-12-24  AndroidMisc
$ ls -l | sed 2q
total 157780
drwxr-xr-x 14 jidanni jidanni      4096 2016-12-24  AndroidMisc
ls: write error: Broken pipe