[RFC][PATCH v1 2/5] include/link.h: Update the link_map struct to allow clones

[Vivek Das Mohapatra]

> This is just bikeshedding but I think 'l_proxy' might be more accurate?

Sounds good. I initially named it clone before I'd fully dug into
the implementation details.

> That way we can talk about inserting a proxy object into a namespace
> and know that the proxy is just that, a thin proxy which points to
> complete link map.

Sounds good to me.