Stripping binaries in conda-forge packages

Related to discussions in https://github.com/ContinuumIO/anaconda-issues/issues/8242 and related issues, I would like to see that we strip binaries in conda-forge packages. For example in the case of Pandas 0.22 on Linux & Py3.6 the current package is 26M large and uncompressed to 108M on disk. If we build this using `CFLAGS=-Wl,-strip-all`, the size reduces to 11M packaged and 52M on disk.

I'm wondering if it would be possible to add this to the environment setting in general for conda-forge builds or if I should raise an issue with `conda-build` that there should be an option to strip binaries after the build.