Updates #2419. Squashed commit of the following: commit e57e6ce56c59d4ef42b1716247fe48a86404179e Author: Ainar Garipov <A.Garipov@AdGuard.COM> Date: Tue Jun 15 19:37:15 2021 +0300 all: imp build tags
Updates #2763. Squashed commit of the following: commit bd2077c6569b53ae341a58aa73de6063d7037e8e Author: Ainar Garipov <A.Garipov@AdGuard.COM> Date: Fri Jun 4 16:25:17 2021 +0300 all: move rlimit_nofile, imp docs commit ba95d4ab7c722bf83300d626a598aface37539ad Author: Ainar Garipov <A.Garipov@AdGuard.COM> Date: Fri Jun 4 15:12:23 2021 +0300 all: support setgid, setuid on unix