Embed __version__ also in the cython generated module (cefpython_py27.pyd)

```
Currently you can query version only from the cefpython3 package:

  import cefpython3
  print(cefpython3.__version__)

However this won't work:

  from cefpython3 import cefpython
  print(cefpython.__version__)
```

Original issue reported on code.google.com by `czarek.t...@gmail.com` on 17 Jan 2015 at 1:32
