message: Ensure deb files we build use gz and not xz
  This makes sure deb files contain data.tar.gz and not data.tar.xz
  (Found by running extract_so_from_deb.sh which choked on
  data.tar.gz file not being present)
diff: @@ -91,7 +91,7 @@ do_package_in_fakeroot() {
  fakeroot -s "${FAKEROOTFILE}" -i "${FAKEROOTFILE}" -- \
  chown -R ${APACHE_USER}:${APACHE_USER} ${STAGEDIR}${MOD_PAGESPEED_LOG}
  fakeroot -i "${FAKEROOTFILE}" -- \
  - dpkg-deb -b "${STAGEDIR}" .
  + dpkg-deb -Zgzip -b "${STAGEDIR}" .
  rm -f "${FAKEROOTFILE}"
  }
  