Log Message:
Update "squid31" package to version 3.1.0.16. Changes since 3.1.0.15:
- Regression Fix: Make Squid abort on all config parse failures.
- Regression Bug 2811: SNMP client/peer table OID numbering
- Bug 2851: Connection pinning fails when using a peer
- Bug 2850: Mismatch in hier_code enum / hier_strings array
- Bug 2731: Add follow_x_forwarded_for support to ICAP
- Bug 2730: Regressions in follow_x_forwarded_for since Squid-2
- Bug 2706: Set timestamps during ICAP request satisfaction.
- Bug 2553: X-Forwarded-For with IPv6 address not handled correctly
- Fix: WCCPv1 not connecting to router correctly
- Remove obsolete RunCache/RunAccel scripts.
- Add client_ip_max_connections
- Add the http::>ha format code and make http::>h log original request
  headers
- ... and all bug fixes from 3.0 up to 3.0.STABLE22
- ... and many more minor build and display annoyances.

This update also contains the fix for the remote DoS vulnerability
reported in "Squid Proxy Cache Security Update Advisory SQUID-2010:1".