squid 3.5.15
squid 3.5.15

Security release, Details:
http://www.squid-cache.org/Advisories/SQUID-2016_2.txt

Closes #49594.

Signed-off-by: Dominyk Tiller <53e438f55903875d07efdd98a8aaf887e7208dd3@gmail.com>

filcab/homebrew,filcab/homebrew,filcab/homebrew,filcab/homebrew