Regression : Pandas 0.20.1  vs 0.19.1
#### Code Sample, a copy-pastable example if possible

```
#Using pandas 0.19.2
import pandas as pd, pickle
arr= np.ones((5,5))
col= [  r'統合商C', r'統合商名', r'区分', r'H区分名' ,  r'H区'  ]
df= pd.DataFrame(arr, columns=col)

with open( 'df_pandas_192.pkl', 'wb') as f:
        pickle.dump(df, f, pickle.HIGHEST_PROTOCOL)

# Using pandas 0.20.1
import pickle
with open('df_pandas_192.pkl', 'rb') as f:
    df= pickle.load(f)

```
#### Problem description
We have an issue due to module breaks 
(probably dataframe class has been changed in 0.20.1)
```
/home/ubuntu/project27//aapackage/util_min.py in py_load_obj(folder, isabsolutpath, encoding1)
    485        dir1= folder
    486 
--> 487     with open(dir1, 'rb') as f:
    488         return pickle.load(f)
    489 
    ModuleNotFoundError: No module named 'pandas.indexes'

```

#### Expected Output

####  Pickle serialized with this version  ``pd.show_versions()``
INSTALLED VERSIONS
------------------
commit: None
python: 2.7.12.final.0
python-bits: 64
OS: Windows
OS-release: 7
machine: AMD64
processor: Intel64 Family 6 Model 58 Stepping 9, GenuineIntel
byteorder: little
LC_ALL: None
LANG: en_US
LOCALE: None.None
pandas: 0.19.2
nose: 1.3.7
pip: 8.1.2
setuptools: 23.0.0
Cython: 0.24
numpy: 1.11.1
scipy: 0.18.0
statsmodels: 0.8.0
xarray: None
IPython: 4.2.0
sphinx: 1.4.1
patsy: 0.4.1
dateutil: 2.5.3
pytz: 2017.2
blosc: None
bottleneck: 1.1.0
tables: 3.4.2
numexpr: 2.6.0
matplotlib: 1.5.1
openpyxl: 2.3.2
xlrd: 1.0.0
xlwt: 1.1.2
xlsxwriter: 0.9.2
lxml: 3.6.0
bs4: 4.4.1
html5lib: None
httplib2: 0.10.3
apiclient: 1.6.2
sqlalchemy: 1.0.13
pymysql: 0.7.9.None
psycopg2: 2.6.2 (dt dec pq3 ext lo64)
jinja2: 2.8
boto: 2.40.0
pandas_datareader: None



#### Output of ``pd.show_versions()``
<details>
INSTALLED VERSIONS
------------------
commit: None
python: 3.6.1.final.0
python-bits: 64
OS: Linux
OS-release: 4.4.0-1031-aws
machine: x86_64
processor: x86_64
byteorder: little
LC_ALL: None
LANG: en_US.UTF-8
LOCALE: en_US.UTF-8

pandas: 0.20.1
pytest: 3.0.7
pip: 9.0.1
setuptools: 27.2.0
Cython: 0.25.2
numpy: 1.12.1
scipy: 0.19.0
xarray: None
IPython: 5.3.0
sphinx: 1.5.6
patsy: 0.4.1
dateutil: 2.6.0
pytz: 2017.2
blosc: None
bottleneck: 1.2.1
tables: 3.3.0
numexpr: 2.6.2
feather: None
matplotlib: 2.0.2
openpyxl: 2.4.7
xlrd: 1.0.0
xlwt: 1.2.0
xlsxwriter: 0.9.6
lxml: 3.7.3
bs4: 4.6.0
html5lib: 0.9999999
sqlalchemy: 1.1.9
pymysql: None
psycopg2: None
jinja2: 2.9.6
s3fs: None
pandas_gbq: None
pandas_datareader: None
</details>
