Better state metadata save/restore

This adds save/restore support for:

• nexus WWN for relevant fabrics
• storage objects unit serial WWN
• APTPL persistent reservations

Bugfixes, packaging

This release has been tested on centOS/RHEL 6.5 and 7 as well as Debian Wheezy and Jessie. The corresponding packages are attached to the release.

New Config API, native save/restore, kernels up to 3.14 and more

New Config API, native save/restore, kernels up to 3.14 and more

3.0-pre1

Drop unused loop.py