[FIX] setup.py: easy_install seems to work.

- the generated bin/openerp-server.py seems to work.
- I would like to remove the data_files() call as it seems redundant with MANIFEST.in.
- Same for find_package_dirs().
- I have to check first how the build on windows work (as it includes different files than on unix).

bzr revid: vmt@openerp.com-20110224142659-r2wbm9f8tkldgwe6