[SUBDIRMK RFC 7/7 option A] README: v2: Draft - Introduce &. and friends

[Ian Jackson]

Ian Jackson writes ("[SUBDIRMK RFC 7/7 option A] README: v2: Draft - Introduce &. and friends"):
>  &/		=>	sub/dir/			or nothing
>  &_		=>	sub_dir_			or TOP_
> +&.		=>	sub/dir				or .
> -&=/		=>	sub/dir				or .
> +&=		=>	sub_dir				or TOP
> -&=_		=>	sub_dir				or TOP
...
>  &^lc		=>	$(top_srcdir)/sub/dir/lc
>  &^/		=>	$(top_srcdir)/sub/dir/
> +&^.		=>	$(top_srcdir)/sub/dir
>  
>  &~lc		=>	$(top_srcdir)/lc
>  &~/		=>	$(top_srcdir)/
> +&~.		=>	$(top_srcdir)

(reordered for clarity of the diff)

I am going to go with this.

Ian.