lang/python*: Backport security fix for CVE-2014-1912
A vulnerability was reported  in Python's socket module, due to a
boundary error within the sock_recvfrom_into() function, which could be
exploited to cause a buffer overflow.
This could be used to crash a Python application that uses the
socket.recvfrom_info() function or, possibly, execute arbitrary code
with the permissions of the user running vulnerable Python code.
This vulnerable function, socket.recvfrom_into(), was introduced in
Python 2.5. Earlier versions are not affected by this flaw. This is
fixed in upstream branches for version 2.7, 3.1, 3.2 and 3.3.