exa2pro/starpu-max: porting work to Maxeler DFE @ 4481d0b2d5f092d7445e1c0bbddb983f21574f8f

Nathalie Furmento 0580b3b9e7 mpi: revert r16098, use a barrier instead and document why it is necessary		10 éve
..
my_interface.c	c537920e32 mpi/examples/user_datatype/my_interface.c: improve error message	10 éve
my_interface.h	1ccc854b64 mpi/examples: add example which defines a MPI datatype for a StarPU user-defined interface	10 éve
user_datatype.c	0580b3b9e7 mpi: revert r16098, use a barrier instead and document why it is necessary	10 éve