pydata/pandas — pull request #3511 by y-p (2013-05-02 05:34:41+00:00)
Title: ENH: add mode.mangle_dupe_cols option GH3468

#3468

as discussed, an added option to disable th mangling behavior
of dupe columns taken by pd.read_csv going back to olden days.

Not sure what the default should be, currently the default is compatible
with existing scripts.