slurm: prefix logs dir with old build_dir
slurm: prefix logs dir with old build_dir

Former-commit-id: 11350473ab453f37d141d37088403ca49694a247
Former-commit-id: b9bcd1e14f06d95e677a3100b649b682b5e9763d [formerly 85eb1207b9a2a0d04d1415fbc1105ebdf65188d0] [formerly cc08a0158294f00d307d4aadde328cb457d19b83 [formerly e079cbfc26747c23723436bf96a81c340f2a1dc5]]
Former-commit-id: 5129353a5d1990b630b2107bbfb11fb1b7ae4fb2 [formerly 2dc8721c200a87ca701c5e8da3e4a9f2c11dcf41]
Former-commit-id: 18b50d1ce433592a6d2ee0fa16d7e462dbad254e
PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild