Merge branch 'master' into core-yaml-repair

.gitignore

TODO

cfg/core_cfg.cfg_tmpl

cfg/tarantool_feeder_cfg.c

cfg/tarantool_feeder_cfg.cfg_tmpl

cfg/tarantool_feeder_cfg.h

cfg/tarantool_silverbox_cfg.c

cfg/tarantool_silverbox_cfg.cfg_tmpl

cfg/tarantool_silverbox_cfg.h

cfg/warning.c

core/Makefile

core/admin.c

core/admin.rl

core/coro.c

core/fiber.c

core/log_io_remote.c

core/pickle.c

core/tarantool.c

core/tbuf.c

core/util.c