Please, remove non-linux dialects from upstream source package before release.
There is problem with copyrights for some UN*Xes ... also .. you can merge all
to the one normal tarball (instead two level tarball that uses upstream) and
rename it to lsof_X.XX-rh.
tar zxvf lsof_X.XX_src.tar
mv lsof_X.XX_src lsof_X.XX-rh
mv README* 00* lsof_X.XX-rh/
cd lsof_X.XX-rh/dialects/
rm -rf <all-non-linux-dialects>
cd ../../
tar jcvf lsof_X.XX-rh.tar.bz2 lsof_X.XX-rh
lsof_X.XX-rh.tar.bz2 <-- use in the lsof.spec file