hgweb: trust config file passed into hgwebdir
Before this patch, hgwebdir suddenly showed up empty for a webdir-conf file
that was for some reason not trusted. This was previously not a problem because
the trust mechanism wasn't required for the very separate webdir-conf.
adding a
b renamed from a:b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3
a renamed from b:9a263dd772e0159ddfa70fb8a448bb6c7ec8c69f
% test with --rev
b renamed from a:b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3