exa2pro/starpu-max: porting work to Maxeler DFE @ a26c94c82020f2b52d582cd08401b2eb6dfb97e5

Nathalie Furmento e9633203a2 mpi/examples/stencil/stencil5_lb.c: only works with 2 nodes (no urge to work out why...)		%!s(int64=9) %!d(string=hai) anos
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stencil5.c	8bb9a66912 Fix data migration: we need to flush the cache too. Add starpu_mpi_data_migrate which does things properly	%!s(int64=10) %!d(string=hai) anos
stencil5_lb.c	e9633203a2 mpi/examples/stencil/stencil5_lb.c: only works with 2 nodes (no urge to work out why...)	%!s(int64=9) %!d(string=hai) anos