logging: if pid file is set (background/daemon mode), log a message on signal
logging: if pid file is set (background/daemon mode), log a message on signal

condor-the-bird/tarantool,Sannis/tarantool,vasilenkomike/tarantool,vasilenkomike/tarantool,rtsisyk/tarantool,dkorolev/tarantool,mejedi/tarantool,dkorolev/tarantool,KlonD90/tarantool,condor-the-bird/tarantool,guard163/tarantool,dkorolev/tarantool,Sannis/tarantool,rtsisyk/tarantool,KlonD90/tarantool,dkorolev/tarantool,ocelot-inc/tarantool,rtsisyk/tarantool,condor-the-bird/tarantool,guard163/tarantool,Sannis/tarantool,ocelot-inc/tarantool,condor-the-bird/tarantool,guard163/tarantool,ocelot-inc/tarantool,dkorolev/tarantool,mejedi/tarantool,mejedi/tarantool,KlonD90/tarantool,Sannis/tarantool,KlonD90/tarantool,KlonD90/tarantool,vasilenkomike/tarantool,ocelot-inc/tarantool,rtsisyk/tarantool,guard163/tarantool,Sannis/tarantool,vasilenkomike/tarantool,mejedi/tarantool,vasilenkomike/tarantool,guard163/tarantool,condor-the-bird/tarantool