[GOLD] PowerPC --stub-group-multi

[Cary Coutant]

> +  DEFINE_bool(stub_group_multi, options::TWO_DASHES, '\0', false,
> +             N_("(PowerpC only) Allow a group of stubs to serve multiple "
> +                "output sections"), NULL);

Typo: should be "PowerPC".

-cary