[klibc] [BUILTIN] Add support for ulimit -r

I recently found myself in need to have dash support 'ulimit -r' to
set maximum realtime priority. Attached is a patch that adds the
parameter to the builtin ulimit command and updates the manpage.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: maximilian attems <max@stro.at>
1 file changed