[Cython] setup.py does not refer to the Apache license

[Michael Abshoff]

Hi,

you guys switched to the Apache [2?] license a while ago, but setup.py 
seems to have not been updated:


   classifiers = [
     "Development Status :: 5 - Production/Stable",
     "Intended Audience :: Developers",
     "License :: OSI Approved :: Python Software Foundation License",
     "Operating System :: OS Independent",
     "Programming Language :: Python",
     "Programming Language :: C",
     "Topic :: Software Development :: Code Generators",
     "Topic :: Software Development :: Compilers",
     "Topic :: Software Development :: Libraries :: Python Modules"
   ],

Cheers,

Michael