dev-python/pyzor: fix the binary stdin patch to work with v1.0.0.

dev-python/pyzor: fix the binary stdin patch to work with v1.0.0.

In my previous commit (adding -r1), I applied a new patch that I've
submitted upstream to address a unicode crash with python-3.x. That
patch applies cleanly against v1.0.0, but won't actually work: the
get_binary_stdin() function it uses exists only in upstream's git
master branch.

To make the patch work (and to fix some other small issues), I've
included the rest of the client changes between v1.0.0 and git
master. There are very few of them -- all python-3.x fixes -- so this
should not be too objectionable.

Bug: https://bugs.gentoo.org/643692
Package-Manager: Portage-2.3.24, Repoman-2.3.6