This allows altering the LICENCE text without changing all files. It should
avoid merge conflicts in the future.

No need to split MPI packet anymore.

When a morton index isn't mapped on any mpi process it is now mapped on
the last one

Now it take the idx of the block instead of the first Morton index.
To avoid a possible overflow with tree higher than 8.

Replace handle type. It was Variable type, and i switch it to vector
type to do a partition on it.

Still have to fix memory leak, but it works.

When  SCALFMM_SIMGRID_TASKNAMEPARAMS was enable, in the m2m mpi, a
variable was incremented too soon.

I know, it's kind of useless, but now it's on the repo.

Note that some error could appear if there is not enough group in input.

The implicit part reproducing explicit mapping works well.
But on the explicit side, it turn out that if all morton indexes ain't
used, it segfault.
Gotta investigate it.

testBlockedImplicitAlgorithm and doesn't require a mapping file anymore.

To do it properly, MPI_Init is done in the main and MPI_Finalize in the
algorithm destructor.

each level.

Note : The constructor is not implemented yet. Just declared.

of the octree.