pkgconfig question

[Christopher Stone]

If an rpm contains a .pc file and is otherwise noarch, does the fact
that it has a .pc file automatically make it unqualified as a noarch
package?

noarch packages will put the .pc file under /usr/lib/pkgconfig which
does not work so well on 64bit arches with /usr/lib64/pkgconfig

Additionally, I noticed that the gtk2-engines rpm owns
%{_libdir}/pkgconfig/ directory.  Shouldn't this directory be owned by
the pkgconfig package?  It seems this goes against packaging
guidelines.