[libvirt] [PATCHv2] maint: enforce recent copyright style

[Jim Meyering]

Eric Blake wrote:
> * cfg.mk (sc_copyright_format): New rule.
...
> +sc_copyright_format:
> +	@$(VC_LIST_EXCEPT) | xargs grep -ni 'copyright .*Red 'Hat	\
> +	  | grep -v Inc							\
> +	  && { echo '$(ME): Red Hat copyright is missing Inc' 1>&2;	\
> +	       exit 1; } || :
> +	@$(VC_LIST_EXCEPT) | xargs grep -ni 'copyright [^(].*Red 'Hat	\
> +	  && { echo '$(ME): consistently use (C) in Red Hat copyright' 1>&2; \
> +	       exit 1; } || :

Thanks for the touch-up.
I've pushed that.