Since commit ddf3bd32, 'make rpm' failed with:

RPM build errors:
    File not found: /home/remote/eblake/rpmbuild/BUILDROOT/libvirt-0.9.6-1.fc14.eblake1318366440.x86_64/usr/share/systemtap/tapset/libvirtd.stp

* libvirt.spec.in (with_dtrace): Match installed .stp files.