do not use *.spec.in template

use *.spec file with RPM macros instead

- 3.1.0
Merge remote-tracking branch 'origin/remove_spec_in'

Conflicts:
	VERSION
	package/yast2.changes
add Rakefile
NetworkService: changed API to support more backends (namely wicked)

The change is backward incompatible
Updated changelog
NetworkService: Renamed cur_service_id_name -> current_name.

Also introduced accessor for current_name into public API to make
current_name read-only..

Renamed internal function get_net_service_name -> get_new_name
NetworkService: removed EnableDisable function

Reasons for removal:
- it worked for netconfig only
- it only Enabled the service
- it was replaced by more generic function EnableDisableNow