rethinking rejected request for `wc -q`

[David Pinto]

Hello

`wc -q` is listed as a rejected feature request [1] because
"redirecting file to stdin is sufficient".  However, I don't think
this is sufficient because it only works when handling a single file.

A feature request in the mailing list after the above [2], suggests to
me that the feature was thought about.

I don't mind sending a patch that implements it, but please let me
know if I should bother.

Many thanks
David

[1] https://www.gnu.org/software/coreutils/rejected_requests.html#wc
[2] https://lists.gnu.org/archive/html/coreutils/2015-11/msg00066.html