[issue19619] Blacklist base64, hex, ... codecs from bytes.decode() and str.encode()

[Serhiy Storchaka]

Changes by Serhiy Storchaka <storchaka at gmail.com>:


----------
nosy: +georg.brandl
priority: high -> release blocker
stage: needs patch -> patch review
versions:  -Python 3.4

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue19619>
_______________________________________