zsh: use capitals and underscores for setopt option names
zsh: use capitals and underscores for setopt option names

To match the man page style (the names are case-insensitive and
underscores are ignored).

wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent