Fixed missing import in ui_backstore
Added debinstall Makefile target
make clean removes editor leftovers: *~ and #*#
Migrate to rtslib.Config for config save/restore

* System startup configuration is now done in this package, and both the new
  initscript and saving configuration from the shell (saveconfig) are using
  the new rtslib.Config API and the /etc/target/scsi_target.lio as config file

* The new initscript is a complete rewrite from scratch, and handles module
  (both core and fabric) loading and configfs initial configfs group creation,
  using rtlib.FabricModule specfile information

* Packaging update to conflict with lio-utils and ship the new init script

* Minor code cleanup in UINode.assert_root
New "configure" mode in targetcli

This is an early preview of the next-generation targetcli based on the new
rtslib.Config API and the lio shell from the rtsli lio-config branch.

This mode allows editing a candidate configuration without impacting the
running system. This candidate configuration can then either be commited or
discarded at will. If commited, it will be applied to the running system and
saved as the new startup configuration.

Other features include loading a configuration from file, undo support,
rollback support, configuration backups and more.

This new mode is using a subshell not based anymore on configshell.
The plan is to introduce this new subshell in the next release, deemed as a
transition release, and eventually replace entirely the current targetcli UI,
when it will have reached parity with the current configshell both in terms of
features and quality of user interaction (colors, syntetic view of the system,
auto-completion, etc.). A basic standalone version of this shell is included
as targetcli-ng.

More information can be found in the target-devel mailing-list, notably the
"[ANN] LIO userspace improvements" thread dated 2014-02-27:

http://thread.gmane.org/gmane.linux.scsi.target.devel/5838/focus=5847

The code was manually ported over from the rtslib lio-config branch.