Martin von Zweigbergk <martinvonz@google.com> [Tue, 11 Sep 2018 11:03:15 -0700] rev 39528
narrow: check "narrow" wire protocol capability, not bundle2 capability
It seems like the new "narrow" wire protocol capability should be what
determines if the server supports the "narrow" and
"{,old}{in,ex}cludepats" arguments to the getbundle request.
Differential Revision: https://phab.mercurial-scm.org/D4527