exa2pro/starpu-max: porting work to Maxeler DFE @ 078324ee7a7ce0b598fe9b8da2aadbfdeaa93bc1

Nathalie Furmento ef395f6e4b when possible, use sizeof instead of a hard-coded value for a string length		8 lat temu
..
gpu_concurrency.c	2bcc6c9758 document what tests test	10 lat temu
long_kernel.cu	68658f16bf Add --enable-coverity flag to configure, to avoid building .cu files with nvcc which produces millions of lines of code we don't want to analyze	10 lat temu
overlap.c	ef395f6e4b when possible, use sizeof instead of a hard-coded value for a string length	8 lat temu
overlap.sh	402d4ba3bf cope with test/overlap execution where only CPUs would have run tasks	8 lat temu