BUG: fix reading pre-0.14.1 pickles of containers with one block and dup items

[immerrr]

Series, frames and panels that contain only one block can be unpickled
under the assumption that block items correspond to manager items 1-to-1
(as pointed out in #7329).

I still don't have any of darwin/win/32bit platforms at hand, so I
cannot post those pickles. Also, my linux has a fresher python than
indicated by filenames of existing pickle test data. I did generate
some data to test the fix, the question is do you want me to upload it?

[jreback]

just put up some legacy files whatever your python / platform (if u want to multiple versions of oython that's ok)

it doesn't matter much that we have for every platform for very version

cross compat is pretty much there

[immerrr]

Ok, I've added pickles for 0.13.0, 0.14.0 (just in case) and 0.14.1.

[jreback]

perfect! ping when green

[jreback]

you have to add the directory of 0.14.0 to setup.py, see here: https://github.com/pydata/pandas/blob/master/setup.py#L578

(actually prob is a better way to do by adding all directories under data), any idea?

[jreback]

@immerrr pls rebase another commit added the 0.14.0 pickle dir already

[immerrr]

rebased and green

[jreback]

@immerrr thanks for the fix! preserving pickle compat is never easy!