* src/ejabberdctl.template: Create logs_dir if doesn't exist. New
parameters --config, --ctl-config, --logs, --spool. Crash dump
renamed to erl_crash_DATETIME.dump.
* src/ejabberdctl.template: Backport improvements from binary
installer (EJAB-488): options are simple values; enable Kernel
Poll by default, set SMP to auto, set max ports to 32000, max
processes to 250000.
* src/ejabberdctl.cfg.example: Likewise