pydata/pandas — pull request #8622 by rosnfeld (2014-10-24 04:56:35+00:00)
Title: BUG: cut/qcut on Series with "retbins" (GH8589)

Fixes #8589.

I centralized a bit of logic into tile.py's ```_bins_to_cuts()``` so that this change could be made in one place, hope that's okay.