Revert "no need to sum stats which we don't use"
Revert "no need to sum stats which we don't use"

my apologies: as long as we pass around a struct wrk, some other
function could use the wrk->stats - in other words, the fact that
the ban stats are decoupled from the wrk stats does not make the
latter any less relevant.

This reverts commit 527f1bd0b74e758c6f8b8ae189b293151e61cd15.

gquintard/Varnish-Cache,gquintard/Varnish-Cache,gquintard/Varnish-Cache,gquintard/Varnish-Cache