BLD: add conda recipe (GH8934)
closes #8934 

so this recipe install the necessary deps for building, even on windows (this is what the dep on `libpython` does, it installs mingw which compiles everything.
 Nice! 

I think it would make sense to create a 'pandas' organization (instead of under your name now), and start providing dev builds (if this is possible? not yet very familiar with binstar) so people who want to try it out don't have to build pandas themselves. So you could do something like:

```
conda install -c https://conda.binstar.org/pandas/channel/dev pandas
```
