Merge branch 'reinout-future-import-scripts' of https://github.com/reinout/buildout into reinout-reinout-future-import-scripts

Merge branch 'refactor-pickedversions' of https://github.com/jaap3/buildout into jaap3-refactor-pickedversions

Removed data_files from setup.py, which was installing README.rst in current directory during installation

Bump version to indicate change in dependencies.

We don't need to juke faking setuptools (or not) when we are using
setuptools rather than distribute.

Even if distutils / setuptools gives it to us more than once.

Use that normalizer everywhere.

My doctest / renormalizer fu is not strong enough to deal with the
changes to output:

- setuptools now has dependencies, and emits output to add them as
  'find-links'.  I tried adding an 'adding_find_link' renormalizer,
  but it doesn't suppress the output.

- Other failures due to merge tweaking APIs, etc.  Again, I'm not
  competent to fix them in the doctest / renormalizer world:  they make
  my head hurt.

This includes renaming `store_picked_versions` to `store_required_by`
to better signify its intent and adding `get_picked_versions`
to `zc.buidlout.easy_install`.

Fixes a bug with multiple import lines. We want to insert ourselves after the
*first* found import line, not the last one...

Also simplified an if/else for when there's no import statement at all.

This exposes a bug.

Fixes #102

Distutils scripts can contain quite a lot of code. Up till now,
only a encoding hint was detected and placed at the top above
our 'import sys' and 'sys.path=' stuff.

Now we look for the first non-__future__ import line and place our
sys.path statement above that line. This makes sure the encoding hint,
the module docstring and the future imports are all above our code,
as should be.

There might be corner cases, but at least this fixes a couple of
common problems.

change entries.

Fixed several tiny typos.

This is weird, platform.python_version_tuple() returns a tuple of ints
on Python 2.6 on windows.