Rather than running sudo inline for every command, require that the script is invoked as a root user
This allows the script to run cleanly in chroot, while eliminating the need for sudo caching logic
Use the latest v4 release tarball to build, which can be installed on top of an older v2 installation
Removed the "cores" option since meson is much better at doing dynamic multi threaded compilation
Also, the netatalk webmin module installation is now part of the netatalk build system proper
