Disable newer setuptools in build dependencies

We don't really need setuptools >= 0.7, and, what's even worth,
py2rpm currently fails to package setuptools 0.7.4 correctly.
So, for now, we restrict setuptools version, as a temporary
workaround.

Change-Id: I278143cd8e7b097c8e03a237a8f03cb7abf013d6
Initial support for Havana 1 (2013.2.1) release

Origins file for 2013.2.1, named havana-2013.2.1.yaml, was added,
and packaging for neutron was fixed in backward-compatible (with
2013.2) manner.

Also, to avoid confusion, origins for Havana were renamed:
* havana-1.yaml renamed to havana-2013.2.yaml
* havana.yaml renamed to havana-git.yaml
* havana.yaml is now symlink to latest supported havana release,
  currently 2013.2.1.

Change-Id: I26d82df5b414d8e786986b2d6004925f9e2ab759
Merge "Disable newer setuptools in build dependencies"
Merge "Initial support for Havana 1 (2013.2.1) release"