datetime.now(tzlocal()).tzname() fails under Polish windows

[Jerzy Ludwichowski]

Under Polish windows the following code

print datetime.now(tzlocal()).tzname()

crashes with

Traceback (most recent call last):
  File "test.py", line 14, in <module>
    print datetime.now(tzlocal()).tzname()
  File "c:\python26\lib\site-packages\dateutil\tz.py", line 39, in inner_func
    return myfunc(*args, **kwargs).encode()
UnicodeDecodeError: 'ascii' codec can't decode byte 0x8c in position 0: ordinal not in range(128)

Reason - the default ascii codec fails on the Polish name of the timezone:
 u"Środkowoeuropejski czas stand.".encode('cp1250')