- Install package epel-release to get the EPEL repo (rather than
  use a fixed URL).
- Use yum makecache fast to speed up caches for all repos.

See also https://github.com/varnishcache/varnish-cache/issues/2967
for a general discussion regarding an inconsistency in the WS_Reserve()
interface

Because the non-manpage version currently produces a broken table
of contents.

Because the non-manpage version currently produces a broken table
of contents.

Even if it is pointless. All stats values are 0 in that case.