Cannot read miniseed files with far future dates

I am unable to read miniSEED files with a date of 2070/11/29.  This could be a simple problem if ObsPy uses an older version of libmseed, which could not read or write dates after 2037 (because of a 32-bit seconds field).  Updating to the latest libmseed would fix this.  

Alternatively, some miniSEED reading scripts use the date to guess the endian-ness: these fail for any date after 2055.  

I can provide an example miniSEED file if you want

The error message is:
```python
>In [23]: st=read('2070-11-27-1159-07M.LSb12_004')
>
>---------------------------------------------------------------------------
>TypeError                                 Traceback (most recent call last)
><ipython-input-23-8a5b9c7626c7> in <module>()
>----> 1 st=read('2070-11-27-1159-07M.LSb12_004')
>
>/Applications/ObsPy.app/Contents/MacOS/lib/python2.7/site-packages/obspy/core/stream.pyc in read(pathname_or_url, format, headonly, starttime, endtime, nearest_sample, dtype, apply_calib, **kwargs)
>    245         pathname = pathname_or_url
>    246         for file in sorted(glob(pathname)):
>--> 247             st.extend(_read(file, format, headonly, **kwargs).traces)
>    248         if len(st) == 0:
>    249             # try to give more specific information why the stream is empty
>
>/Applications/ObsPy.app/Contents/MacOS/lib/python2.7/site-packages/obspy/core/util/decorator.pyc in wrapped_func(filename, *args, **kwargs)
>    149         else:
>    150             # call wrapped function with original filename
>--> 151             result = func(filename, *args, **kwargs)
>    152         return result
>    153     return wrapped_func
>
>/Applications/ObsPy.app/Contents/MacOS/lib/python2.7/site-packages/obspy/core/stream.pyc in _read(filename, format, headonly, **kwargs)
>    286     """
>    287     stream, format = _readFromPlugin('waveform', filename, format=format,
>--> 288                                      headonly=headonly, **kwargs)
>    289     # set _format identifier for each element
>    290     for trace in stream:
>
>/Applications/ObsPy.app/Contents/MacOS/lib/python2.7/site-packages/obspy/core/util/base.pyc in _readFromPlugin(plugin_type, filename, format, **kwargs)
>    411         raise TypeError(msg % (format_ep.name, ', '.join(EPS)))
>    412     # read
>--> 413     list_obj = readFormat(filename, **kwargs)
>    414     return list_obj, format_ep.name
>    415 

>/Applications/ObsPy.app/Contents/MacOS/lib/python2.7/site-packages/obspy/mseed/core.pyc in readMSEED(mseed_object, starttime, endtime, headonly, sourcename, reclen, recinfo, details, **kwargs)
>    176     # Parse some information about the file.
>    177     if recinfo:
>--> 178         info = util.getRecordInformation(mseed_object)
>    179         info['encoding'] = ENCODINGS[info['encoding']][0]
>    180         # Only keep information relevant for the whole file.
>
>/Applications/ObsPy.app/Contents/MacOS/lib/python2.7/site-packages/obspy/mseed/util.pyc in getRecordInformation(file_or_file_object, offset)
>    243     if isinstance(file_or_file_object, basestring):
>    244         with open(file_or_file_object, 'rb') as f:
>--> 245             info = _getRecordInformation(f, offset=offset)
>    246     else:
>    247         info = _getRecordInformation(file_or_file_object, offset=offset)
>
>/Applications/ObsPy.app/Contents/MacOS/lib/python2.7/site-packages/obspy/mseed/util.pyc in _getRecordInformation(file_object, offset)
>    323     starttime = UTCDateTime(year=values[0], julday=values[1], hour=values[2],
>    324                             minute=values[3], second=values[4],
>--> 325                             microsecond=values[5] * 100)
>    326     npts = values[6]
>    327     info['npts'] = npts
>
>/Applications/ObsPy.app/Contents/MacOS/lib/python2.7/site-packages/obspy/core/utcdatetime.pyc in __init__(self, *args, **kwargs)
>    321             kwargs['second'] = int(args[5])
>    322             args = args[0:5]
>--> 323         dt = datetime.datetime(*args, **kwargs)
>    324         self._fromDateTime(dt)
>    325 
```