switcheroo-control-1.2-bp150.3.3

- Add systemd-rpm-macros BuildRequires and service_add_*
  pre/post/preun/postun scriptlets for switcheroo-control.service
  to comply with openSUSE's Guidelines (boo#1096823).
- Pass --with-systemdsystemunitdir=%{_unitdir} parameter to
  configure to correct the systemd unit file's location.
- Adopt the use of %make_install macro rather than raw make
  command, following the best practices.

- Update to version 1.2:
  + Fix API documentation not being part of the tarball.

- Change License tag to GPL-3.0 instead of GPL-3.0+ (see legal
  review for https://build.opensuse.org/request/show/507370).

- DBus service has been reviewed and approved (boo#1034309),
  remove corresponding entry from rpmlintrc.

- Initial package.
- Add %{name}-rpmlintrc file to filter out warning about missing
  man file for binary (upstream does not provide it) and set
  badness for 'suse-dbus-unauthorized-service' to zero until
  security review approves the dbus service (see boo#1034309).