Remove Conf struct; put option handling in main
Remove Conf struct; put option handling in main

This is more consistent with the other utilities, and probably less
confusing.

Arcterus/coreutils,Gianbaoluo/coreutils,bundai223/coreutils,retep998/coreutils,kwantam/coreutils,hexsel/coreutils,samfoo/coreutils,ebfe/coreutils,Arcterus/coreutils,filmor/coreutils,dbrgn/coreutils,beni55/coreutils,kwantam/coreutils,kball/coreutils,keunwoo/coreutils,retep998/coreutils,bundai223/coreutils,wimh/coreutils,Shtong/coreutils,ebfe/coreutils,silvio/rust-coreutils,Heather/coreutils,steveklabnik/coreutils,beni55/coreutils,Gianbaoluo/coreutils,dennis/coreutils,jbcrail/coreutils,kevgeniy/coreutils,sshling/coreutils,kball/coreutils,Shtong/coreutils,filmor/coreutils,Shir0kamii/coreutils,dbrgn/coreutils,silvio/rust-coreutils,jbcrail/coreutils,uutils/coreutils,efuquen/coreutils,polapl/coreutils,efuquen/coreutils,hexsel/coreutils,steveklabnik/coreutils,tempbottle/coreutils,Shir0kamii/coreutils,uutils/coreutils,mauricio/coreutils,uutils/coreutils,polapl/coreutils,dokaptur/coreutils,wimh/coreutils,Heather/coreutils,kevgeniy/coreutils,mauricio/coreutils,dbrgn/coreutils,samfoo/coreutils,keunwoo/coreutils,dennis/coreutils,tempbottle/coreutils,sshling/coreutils