Anyone has the Leon 2 ip core (source code), and its additional grlib components, since it is no longer available on www.gaisler.com ?

AFAIK there has not been a release with LEON2 + GRLIB. The original LEON2 distribution can be found with Google.

If you want to use GRLIB components I suggest that you use LEON3 instead. Since:
1. LEON3 is maintained.
2. A higher frequency can typically be attained with LEON3.
3. The potential drawback with using LEON3 is that it is GPL (which is only a problem if you want to keep your design closed). However if you intend to use components from GRLIB these will also be GPL.
4. It is harder to design with LEON2 since it is one SoC where you can choose to include or exclude some components. GRLIB is much more flexible when adding components.