* online doc moved from http://packages.python.org/sqlalchemy-migrate/
  to https://sqlalchemy-migrate.readthedocs.org/
* source code moved from http://code.google.com/p/sqlalchemy-migrate/
  to https://github.com/stackforge/sqlalchemy-migrate
* bug tracker moved from
  http://code.google.com/p/sqlalchemy-migrate/issues/list to
  https://bugs.launchpad.net/sqlalchemy-migrate

Change-Id: I2db594d279e1229e5b1600cecad86fe0c3612115

On Python 3, some functions like range() don't try to call the __int__()
method to cast an object to integer, but try instead the __index__()
method.

Add an __index__() method to mimick correctly the int type on Python 3.

Change-Id: I8df116d80e201778714a59367600eaef644266ed

The usage function of migrate_repository.py isn't Python 3 compatible,
and this hasn't be caught by unit tests. This patch fixes the function,
so at least the file can be compiled in Py3.

Change-Id: Ib9333e46e7526e82acde573d4b2046b2bf9a7ae0

There are two changes which have to go together to pass the gate
tests:

1. Update pbr and mock requirements from global-requirements

mock 1.2 supports py26 again so make that the minimum version. The
same change is being made in g-r with:

Ic6b9e18eaec9c81bbbbc57129e024904be928e09

Sync up with latest pbr in global-requirements while we're at it.

Closes-Bug: #1474925

2. Fix the importpath module to work with python >= 3.3 where the
__import__ built-in is raising an ImportError on a temporary file
that is added to the system path.

Closes-Bug: #1475339

Change-Id: Ie98938ba75f3983094dd540b7d26a7ec46be4f6e

This reverts commit e4d0e5be8d0d154eaec1ae0bb156d1c7485043b9

Now that flake8-related dependencies have been updated in the
dependent change the pep8 job is fixed.

Change-Id: Idfa6a18836d7ce02dfaa5d9da1a51c98ad987f51

In order to raise the cap on pbr we need to update
the dependent versions of the flake8 related packages
for the pep8 job since they have capped pbr.

A couple of simple hacking issues are fixed, the rest
are ignored.

Change-Id: Icddb5bf284da7b6463ebcfc7512726149ffe6085

This reverts commit 35832555c5ede7148bedbfec0d79351d90a93b53

The non-voting pep8 job was failing due a VersionConflict
with pbr, so this shouldn't have been merged.

Change-Id: I4917b92121cac524fd89575f30d72d7319cbe20c