[python-committers] Commit Privileges for Ask Solem

[Éric Araujo]

>> Just make sure he understands what commit policies we have on what
>> branches (dead: <=2.4, 3.0, security-only: 2.5, 2.6, bug fixes only:
>> 2.7, 3.1, new features: 3k)

Barry confirmed on IRC with this clarification (thanks):

- a stable version does not go into security mode as soon as the new
stable is out, only some time after, when the last bugfix (i.e. micro)
release is made;

- an old stable version gets security fixes for five years, even if
there is another old stable version before this term.

Regards