adding the recipe python-vcstools, as now that the python recipes do not use setuptools to get all the dependencies write we need further recipes

adding the setuptools class from openembedded classic; adjusting the packages; adding legal statement

experimenting with a solution for the packaging with easyinstall that was suggested by Ross Burton on the oe mailing list

This reverts commit 11cd0706450150fb9a9e7e5df2eae08e9c525d0b.
For the moment, this feature is not used. Maybe a later iteration might extract the settings and use it.

This reverts commit aa0c0ec99370f6ffcd19e9c5f3c9cf1a7cf65a76.