exa2pro/starpu-max: porting work to Maxeler DFE @ e74c8b0d1d29693c35f07012528223917a37f4d9

Cyril Roelandt 0514f248d3 starpu_init_noworker: unset environment variables so that they do not get in the way.		14 gadi atpakaļ
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invalid_blocking_calls.c	685f84fcdb Include valgrind.h in helper.h, not directly in the tests.	14 gadi atpakaļ
invalid_tasks.c	9aaa7caf99 tests: if starpu_init() returns -ENODEV, skip the test, do not fail it	14 gadi atpakaļ
starpu_init_noworker.c	0514f248d3 starpu_init_noworker: unset environment variables so that they do not get in the way.	14 gadi atpakaļ