exa2pro/starpu-max: porting work to Maxeler DFE @ d22f7b3aefdc57c64c6b0637d4bcbfcf70194157

Samuel Thibault d22f7b3aef fix tag dependency, seems to work better now		16 lat temu
..
mpi_lu	d22f7b3aef fix tag dependency, seems to work better now	16 lat temu
Makefile.am	c46518553b Introduce an MPI version of the LU decomposition (work in progress !)	16 lat temu