exa2pro/starpu-max: porting work to Maxeler DFE @ ed192f10f0ff3a1e6dbf4c8fade3ae9f2d78589a

Cyril Roelandt 0514f248d3 starpu_init_noworker: unset environment variables so that they do not get in the way.		%!s(int64=13) %!d(string=hai) anos
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invalid_blocking_calls.c	685f84fcdb Include valgrind.h in helper.h, not directly in the tests.	%!s(int64=13) %!d(string=hai) anos
invalid_tasks.c	9aaa7caf99 tests: if starpu_init() returns -ENODEV, skip the test, do not fail it	%!s(int64=13) %!d(string=hai) anos
starpu_init_noworker.c	0514f248d3 starpu_init_noworker: unset environment variables so that they do not get in the way.	%!s(int64=13) %!d(string=hai) anos