* gives an old2new map for the local part of the source mesh that has been sent to proc#i, just based on the
* bounding box computation (this is potentially a larger set than what is finally in the interp matrix).
* Second member gives proc ID. */
* gives an old2new map for the local part of the source mesh that has been sent to proc#i, just based on the
* bounding box computation (this is potentially a larger set than what is finally in the interp matrix).
* Second member gives proc ID. */