version number exist in the following places:
configure.ac (twice, at the top)
rdfind.1 (both at the top and the bottom)
VERSION.txt
ChangeLog

make a (signed) git tag:
git config user.signingkey C9D9A0EA44EAE0EB
git tag -s releases/$(cat VERSION.txt)

release a tar ball:
git clean -xdf .
./bootstrap.sh
./configure
make dist-gzip

make information for publishing the tar ball on https://rdfind.pauldreik.se/:
key=$(git config user.signingkey)
pkg=rdfind-$(cat VERSION.txt).tar.gz
gpg -u $key -a -b $pkg

cat VERSION>table.txt
git show-ref --hash=8 releases/$(cat VERSION.txt) >>table.txt
echo $pkg >>table.txt
echo $pkg.asc >>table.txt
echo 0x$key >>table.txt
echo $(sha1sum < $pkg |cut -f1 -d' ')" (SHA1)" >>table.txt
echo $(sha256sum < $pkg |cut -f1 -d' ')" (SHA256)" >>table.txt

man2html rdfind.1 |tail -n +3 > rdfind.1.html
