Resolves: RHBZ#1585321

  This concept is quite outdated, and not sane to use at all.

  Use 'git log' instead...

  This installs the real scripts into /etc/sysconfig/network-scripts
  while leaving the management of the launchers in /usr/sbin to the
  alternatives system.

  This allows coexistence with alternative implementations of ifup
  and ifdown, notably NetworkManager.

  A priority of 90 is chosen rather arbitrarily, NetworkManager will
  use a lower one (50) so that our implementation takes precedence over
  NetworkManaager in case both are installed. In an unlikely event the
  user will want to switch to NetworkManager implementations when both
  are installed they can override the default with:

  $ update-alternatives --config ifup

  'check' and 'syntax-check' rules were dropped, as they seem obsolete
  nowadays (we are not using them at all)...

  The symlinks are no longer needed. Enablement of default services is
  now managed by 'fedora-release' package.

  Using this package was very dangerous, and could lead to instability
  of system, or even being unable to bootup at all, and value of this
  functionality was at least questionable, and was not documented.

  We decided to drop functionality completely, to make sure users do not
  install it accidentally (e.g. by using globbing with 'dnf install').

  Resolves: #69

  Users can still create the /etc/sysconfig/init file manually to
  override the default values, which are now taken from init.d/functions.