exa2pro/starpu-max: porting work to Maxeler DFE @ 502d1bf5efe257ef71c57f032ca62eb14a1bc259

Ludovic Courtès ad65bc046d schedulers.sh: Use integer comparison for $?.		14 lat temu
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dummy_sched.c	0ee3ebd86c examples: return 77 when there are no devices.	14 lat temu
schedulers.sh	ad65bc046d schedulers.sh: Use integer comparison for $?.	14 lat temu