Update on base.pm jessie point release

[Dominic Hargreaves]

Just to confirm that

1) this commit is identical to those now in upstream release candidates.
2) This has now been filed as #867164 (sorry that this was missing before)
3) this particular bug doesn't strictly apply to stretch/sid, but we plan
   to fix it in sid at least for consistency and to fix the minor remaining
   security bug (see #867170)

Thanks,
Dominic.