See: https://bugzilla.redhat.com/show_bug.cgi?id=604169
and the thread on the packaging list.

Quoting Toshio:

"So I think the current situation is that there's several options. The
preferred option is to have all of the packages that install files there own
the directory. The question for the packaging committee is whether we
should:

A) Require that in the Guidelines
B) Say that we, the FPC, support people changing gtk-doc requiring packages
to own the directory instead.
C) Say that we, the FPC, consider this to be a matter of maintainer choice
where it doesn't matter at all if the packages require gtk-doc or own the
directory."