Update to version 9.11

Changelog:
Failure to use the external polarssl and lack of time has broguht me to
release hiawatha using the internal version of polarssl.

hiawatha (9.11) stable; urgency=low
ChallengeClient option added.
UrlToolkit options TotalConnections and OmitRequestLog added.
Improvements to UrlToolkit and reverse proxy swap.
UrlToolkit rules are also applied to PUT and DELETE.
Small improvements.

PR: 197205
Submitted by: chris@bsdjunk.com (maintainer)