Another update.
Hookup with pam

Ticket: #4628
Log connection drops as warnings.
Plug one memory leak in py-libxml2.  This happens when Python tries to
free a XMLDoc object, which has to be freed with xmlFreeDoc rather than
a normal free().  Without this change the leak would be huge.

There may be other leaking points that we need to plug in the meantime.
Revert "Plug one memory leak in py-libxml2.  This happens when Python tries to"

This reverts commit 18278505d1acad56f0ca4d27e138e9f701ff3eac
because it introduced a use-after-free issue.
devel/py-sysctl: update to 0.1b8

(cherry picked from commit ad5b4d7836aa223bb7890c12785e87535414d7f2)
devel/py-sysctl: update to 0.1b9

(cherry picked from commit c3814d56c3c3f0e302b5ae299f304d325f206fc9)