- arch depends of dist
- PKGBUILD depends of configure (version is set inside)

As a consequency, this patch also add a config file for mailboot.

Add PKGBUILD installation how to
Add using how to
Add AUR link

This will make github display RestructuredText correctly.

This is not used (and will no be)

There is currently no state in bootmail script which require to have the service
marked as running in systemd.

All the basics should be here.