do not quote pip dependency on windows

This resolves #95 (hopefully)
v0.10.26
Make it possible to define distutils console_scripts

Probably we want to make this default instead of filling `scripts`.
But I don't like it right now. It's a hard runtime dependency on
setuptools and I have seen `load_entry_point` behave very strangely on
several systems under various conditions.

This also introduces a `pyb_` script (which is cross-platform and should
work on windows but has a hard runtime dependency on setuptools, as
mentioned).
Somehow resolves issue #94 .
Maybe @aelgru wants to chime in - if we are to support cross platform
libraries and programs, then we will have to use `console_scripts`
instead of `scripts`.
v0.10.27
fix py2.6 compatibility in test assertion
rename confusing variable
avoiding reuse of deprecated description decorator
renaming task_description -> description

It's no longer a problem to shadow the `description` decorator from the
enclosing scope, because we don't use it anymore. It will be deprecated
and then removed in an upcoming release.