Add backports of collections.OrderedDict and Counter for Py2.6
Merge branch 'v0.12.x' of https://github.com/PythonCharmers/python-future into v0.12.x
Add What's New entry for OrderedDict and Counter backports to Py2.6
Fix imports for OrderedDict on Py2.6
Docs: update test count
Docs: mark collections.OrderedDict backport for Python 2.6 as being for issue #52