Adding info to Python Buglist

[Hrvoje Niksic]

Jason Trowbridge <ratman at nmt.edu> writes:

> *The RFC I'm talking about is RFC 1521.

Please note that rfc1521 has been obsoleted by rfc2045 *years* ago.
Base64 encoding is described in section 6.8.

Also, I'm not sure if ignoring invalid pad sequences is a good idea.
rfc2045 explicitly says that characters out of the base64 alphabet are
to be ignored.  However, illegal padding is not mentioned.

I think it makes sense to raise an exception in that case.