Description of problem:
The libgail-gnome RPM does not ship the libgail-gnome.pc file. This
file is required to build certain applications, like at-poke (0.2.1).
In the libgail-gnome spec file, the pkgconfig directory is explicitly
removed and not packaged:

.....
%install
rm -rf $RPM_BUILD_ROOT
%makeinstall

# remove unpackaged files from the buildroot
rm -rf $RPM_BUILD_ROOT%{_libdir}/pkgconfig
.....

Was this done on purpose? Is there a reason why the pkgconfig file is
not shipped?

Version-Release number of selected component (if applicable):
1.0.2-2

How reproducible:
rpm -qf libgail-gnome | grep pkgconfig