just using a existance of irclog.ircbot option instead of irclog.ircbot.disabled
Revert "just using a existance of irclog.ircbot option instead of irclog.ircbot.disabled"

This reverts commit e536f76872314f644c95a6828de45bb3b12919c1.
enabled ircbot.start() at BootStrap
using irclog.ircbot.enable instead of irclog.ircbot.disable

not supported system property ircbot.disabled