Log Message:
Update "squid31" package to version 3.1.6. Changes since 3.1.5.1:
- Bug 2994, 2995: IPv4-only regressions
- Bug 2991: Wrong parameters to fcntl() in commSetCloseOnExec()
- Bug 2975: chunked requests not supported after regular ones
- Fix: 32-bit overflow in reported bytes received from next hop
- Fix Libtool build regressions
- Limited split-stack IPv6 support.
- squid_db_auth support MD5 encrypted passwords