How to create a source tarball
------------------------------

The upstream repo contains a submodule, which needs to be set up before
the tarball can be created:

git clone https://github.com/streambinder/vpnc.git
git submodule init
git submodule update
cd src/doc && git co master && cd -
GITVERSION=`git log --format='git%cd' --date=format:%Y%m%d -1`
tar czf ../vpnc_0.5.3+$GITVERSION.orig.tar.gz --exclude-vcs --exclude=.github .
