main.c : added daemonize() to become a daemon when option -d is passed
	When we are a daemon, the log file is set to /tmp/apricot.log
	by default, somewhere accessible on the whole system because we
	quit the user home directory.

	Configuration file is read before daemonizing, because it is in
	my opinion more relevant to print errors on standard error when reading
	configuration than on the log file when we are already a daemon.