test_missing_value_conversion on ubuntu 13.10 32bit KeyError: 2147483647
```
======================================================================
ERROR: test_missing_value_conversion (pandas.io.tests.test_stata.TestStata)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/tmp/buildd/pandas-0.15.1+git125-ge463818/debian/tmp/usr/lib/python3/dist-packages/pandas/io/tests/test_stata.py", line 651, in test_missing_value_conversion
    parsed_113 = read_stata(self.dta17_113, convert_missing=True)
  File "/tmp/buildd/pandas-0.15.1+git125-ge463818/debian/tmp/usr/lib/python3/dist-packages/pandas/io/stata.py", line 69, in read_stata
    order_categoricals)
  File "/tmp/buildd/pandas-0.15.1+git125-ge463818/debian/tmp/usr/lib/python3/dist-packages/pandas/io/stata.py", line 1278, in data
    missing_value = StataMissingValue(um)
  File "/tmp/buildd/pandas-0.15.1+git125-ge463818/debian/tmp/usr/lib/python3/dist-packages/pandas/io/stata.py", line 646, in __init__
    self._str = self.MISSING_VALUES[value]
KeyError: 2147483647
```

doesn't happen on amd64

```
INSTALLED VERSIONS
------------------
commit: None
python: 3.3.2.final.0
python-bits: 32
OS: Linux
OS-release: 3.2.0-4-amd64
machine: x86_64
processor: x86_64
byteorder: little
LC_ALL: C
LANG: C

pandas: 0.15.1.dev
nose: 1.3.0
Cython: 0.19
numpy: 1.7.1
scipy: 0.12.0
statsmodels: None
IPython: None
sphinx: 1.1.3
patsy: None
dateutil: 2.0
pytz: 2012c
bottleneck: None
tables: None
numexpr: None
matplotlib: 1.2.1
openpyxl: None
xlrd: None
xlwt: None
xlsxwriter: None
lxml: None
bs4: 4.2.0
html5lib: None
httplib2: None
apiclient: None
rpy2: None
sqlalchemy: None
pymysql: None
psycopg2: None
```
