exa2pro/starpu-max: porting work to Maxeler DFE @ ab9b3fcfbd41b90ed0d1765e50eb26c085c245b7

Samuel Thibault 1a83af1be4 Make sure users use starpu_conf_init to initialize starpu_conf. Fix some code		%!s(int64=13) %!d(string=hai) anos
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matrix_cuda.cu	e231ac49b5 Add standard test for the matrix interface	%!s(int64=14) %!d(string=hai) anos
matrix_interface.c	1a83af1be4 Make sure users use starpu_conf_init to initialize starpu_conf. Fix some code	%!s(int64=13) %!d(string=hai) anos
matrix_opencl.c	d6fd124ae4 Check the return value of starpu_opencl_unload_opencl().	%!s(int64=13) %!d(string=hai) anos
matrix_opencl_kernel.cl	e231ac49b5 Add standard test for the matrix interface	%!s(int64=14) %!d(string=hai) anos