0.16.2: HTML docs fail to make, "TypeError: an integer is required (got type str)"
- `pip3 install --upgrade pandas` # installed 0.16.2
- Download 0.16.2 source, unzip, use `pip3` to install Sphinx (1.3.1, and dependencies such as sphinx-rtd-theme (0.1.8))
- run `make.py html` in `doc` folder

```
C:\Python34\pandas-0.16.2\doc>c:\Python34\python.exe make.py html
Traceback (most recent call last):
  File "C:\Python34\Scripts\sphinx-build-script.py", line 9, in <module>
    load_entry_point('Sphinx==1.3.1', 'console_scripts', 'sphinx-build')()
  File "C:\Python34\lib\site-packages\sphinx\__init__.py", line 51, in main
    sys.exit(build_main(argv))
  File "C:\Python34\lib\site-packages\sphinx\__init__.py", line 61, in build_main
    from sphinx import cmdline
  File "C:\Python34\lib\site-packages\sphinx\cmdline.py", line 23, in <module>
    from sphinx.application import Sphinx
  File "C:\Python34\lib\site-packages\sphinx\application.py", line 37, in <module>
    from sphinx.builders import BUILTIN_BUILDERS
  File "C:\Python34\lib\site-packages\sphinx\builders\__init__.py", line 23, in <module>
    from sphinx.util import i18n, path_stabilize
  File "C:\Python34\lib\site-packages\sphinx\util\i18n.py", line 15, in <module>
    from babel.messages.pofile import read_po
  File "C:\Python34\lib\site-packages\babel\messages\__init__.py", line 12, in <module>
    from babel.messages.catalog import *
  File "C:\Python34\lib\site-packages\babel\messages\catalog.py", line 23, in <module>
    from babel.dates import format_datetime
  File "C:\Python34\lib\site-packages\babel\dates.py", line 28, in <module>
    from babel.util import UTC, LOCALTZ
  File "C:\Python34\lib\site-packages\babel\util.py", line 278, in <module>
    from babel import localtime
  File "C:\Python34\lib\site-packages\babel\localtime\__init__.py", line 21, in <module>
    from babel.localtime._win32 import _get_localzone
  File "C:\Python34\lib\site-packages\babel\localtime\_win32.py", line 18, in <module>
    tz_names = get_global('windows_zone_mapping')
  File "C:\Python34\lib\site-packages\babel\core.py", line 58, in get_global
    _global_data = pickle.load(fileobj)
TypeError: an integer is required (got type str)
Building HTML failed.
```
