Fail on basemap.drawcounties() Python 3.5.2

まだ誰も着手していません。

Platform:

```
Python 3.5.2 |Continuum Analytics, Inc.| (default, Jul 2 2016, 17:53:06)
[GCC 4.4.7 20120313 (Red Hat 4.4.7-1)] on linux
```

Throws error on basemap.drawcounties() (over Illinois)

```
Traceback (most recent call last):
File "animate_aws.py", line 171, in
writer='imagemagick', fps=5)
File "/home/scollis/anaconda/envs/pyart35/lib/python3.5/site-packages/matplotlib/animation.py", line 832, in save
anim._init_draw()
File "/home/scollis/anaconda/envs/pyart35/lib/python3.5/site-packages/matplotlib/animation.py", line 1221, in _init_draw
self._draw_frame(next(self.new_frame_seq()))
File "/home/scollis/anaconda/envs/pyart35/lib/python3.5/site-packages/matplotlib/animation.py", line 1243, in _draw_frame
self._drawn_artists = self._func(framedata, *self._args)
File "animate_aws.py", line 166, in animate
display.basemap.drawcounties()
File "/home/scollis/anaconda/envs/pyart35/lib/python3.5/site-packages/mpl_toolkits/basemap/__init__.py", line 1980, in drawcounties
default_encoding='latin-1',drawbounds=drawbounds)
File "/home/scollis/anaconda/envs/pyart35/lib/python3.5/site-packages/mpl_toolkits/basemap/__init__.py", line 2146, in readshapefile
for shprec in shf.shapeRecords():
File "/home/scollis/anaconda/envs/pyart35/lib/python3.5/site-packages/mpl_toolkits/basemap/shapefile.py", line 543, in shapeRecords
for rec in zip(self.shapes(), self.records())]
File "/home/scollis/anaconda/envs/pyart35/lib/python3.5/site-packages/mpl_toolkits/basemap/shapefile.py", line 515, in records
r = self.__record()
File "/home/scollis/anaconda/envs/pyart35/lib/python3.5/site-packages/mpl_toolkits/basemap/shapefile.py", line 491, in __record
value = u(value)
File "/home/scollis/anaconda/envs/pyart35/lib/python3.5/site-packages/mpl_toolkits/basemap/shapefile.py", line 58, in u
return v.decode('utf-8')
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xf1 in position 2: invalid continuation byte
```

mpl_toolkits/basemap/shapefile.py から始め、報告された drawcounties() の traceback にある records() と __record() を追跡します。報告された Python 3.5.2 環境で Illinois の drawcounties() 呼び出しを再現し、エンコーディングの失敗を追跡します。呼び出しが UnicodeDecodeError なしで完了すれば完了です。

索引モデルが issue の本文から書いたものです。