Merge branch 'release/1.6.1'
Merge branch 'release/1.6.1'
Support creating a virtualenv from a python build directory on windows. Fixes https://github.com/pypa/virtualenv/issues/139
Rebuild script after distribute 0.6.19 upgrade

Issue #137
Merge pull request #146 from pnasrat/fix-py33

Rebuild script after distribute 0.6.19 upgrade
Be more careful to import the right pkg_resources when running under -p. Fixes #141.
Use correct path to activate.bat in docs. Fixes #112.
Create an additional symlink to the 'local' dir in case the posix_local install scheme is used. Fixes #118.
Corrected Logger.level_matches (and doctests). Fixes #109.
Updated included pip to 1.0.2.
Updated news.
Bumped version to 1.6.2.
Merge branch 'release/1.6.2'
Merge branch 'release/1.6.2' into develop
Restored ability to run on Python < 2.7. Fixes #153.
Bumped version to 1.6.3.
Merge branch 'hotfix/1.6.3'
Merge branch 'hotfix/1.6.3' into develop
Corrected link to bootstrap example script of fassembler. Fixes #99.
Adding activate.ps1, adapted from the script generated by http://code.philsturgeon.co.uk/guillermooo/virtualenvwrapper-powershell/overview