exa2pro/starpu-max: porting work to Maxeler DFE @ f95cd146b8f2bdad7adbe49e76720984e5fefb7a

Samuel Thibault 86bec59609 This test should work now		12 rokov pred
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disk_compute.c	aba9b7562b Make disk test actually test all backends. Partly revert r13785 which was using a union as a structure.	12 rokov pred
disk_copy.c	7b2bbc9659 Use powers of two so that o_direct can work	12 rokov pred
disk_pack.c	86bec59609 This test should work now	12 rokov pred