Changes to squid-3.5.16 (02 Apr 2016):
- Bug 4476: Removed duplicated #include lines
- Bug 4452: squid -z segfaults with ufs
- Bug 4447:FwdState.cc:447 "serverConnection() == conn" assertion
- Bug 4423: adding stdio: prefix to cache_log directive produces FATAL error
- Bug 4409: compile error when two Heimdal libraries are installed
- Bug 2831: Cache-control: max-age not sent on TCP_IMS_HIT/304
- pinger: Fix buffer overflow in Icmp6::Recv
- pinger: Fix select(2) to actually use max_fd
- pinger: drop capabilities on Linux
- Fix memory leak of HttpRequest objects
- Fix memory leak when the cache of sslcrtvalidator_program is disabled via ttl=0
- Fix assertion failed: Write.cc:41: "!ccb->active()"
- Fix crash on shutdown while cleaning up idle ICAP connections
- RFC 7725: Add registry entry for 451 status text
- ... and some build issues