exa2pro/starpu-max: porting work to Maxeler DFE @ 70cbd53b4313f89feff29542335d68830fcd985a

Samuel Thibault 1a83af1be4 Make sure users use starpu_conf_init to initialize starpu_conf. Fix some code		13 lat temu
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matrix_cuda.cu	e231ac49b5 Add standard test for the matrix interface	14 lat temu
matrix_interface.c	1a83af1be4 Make sure users use starpu_conf_init to initialize starpu_conf. Fix some code	13 lat temu
matrix_opencl.c	d6fd124ae4 Check the return value of starpu_opencl_unload_opencl().	14 lat temu
matrix_opencl_kernel.cl	e231ac49b5 Add standard test for the matrix interface	14 lat temu