Re: earl location pointer methods

"Shadi Abou-Zahra" <shadi@w3.org>
> I'm OK without having these pointers be subclasses of a generic pointer 
> class because I agree it adds a lot of overhead with little value. 
> However,
> I think it may be good to introduce a generic pointer class so that the 
> core pointers can be extended with other types of pointers we are 
> currently
> not thinking of.

added an Earl:Pointer class.

Added range and domain for all.

Attached is the rdfs and an example file

Cheers,

Jim.