added test script and expected output file as well
this closes patch 103297.
__all__ attributes will be added to other modules without first submitting
a patch, just adding the necessary line to the test script to verify
more-or-less correct implementation.
"""
Extended chunk so that it can also handle formats that are almost
according to EA IFF 85. In particular, added options to handle
little-endian and to handle formats that include the header size in
the chunk size value.
Fixed a bug where the header size was included in the chunk size, which
it isn't according to EA IFF 85.
Added a new method getsize() to get the size of the chunk (excluding
header).
Fixed chunk documentation (TIFF doesn't look like it uses chunks).
Converted wave to use chunk. Wave uses EA IFF 85 chunks except that
it uses little-endian encoding of integer data.
Removed __del__ methods from aifc and wave since I got an
AttributeError there upon exit.
"""
Added support for unseekable files.
(I use unqualified excepts since we don't know why the seek/tell might
fail. In my case it was because of an AttributeError.)
