gentoo: exclude /dev entries
gentoo: exclude /dev entries

Former-commit-id: d8ff6507a75706d7c73322388669b6299652e31a
Former-commit-id: 21e1245228bae65c4fdbc6115eb7d0dba7357dd5 [formerly 81641e458446d57a41288fc7ae1c03e17555fb8e] [formerly 84a59d9eb486205a298eb1b0709b7feb06f31a4a [formerly afa6b78a8116481a0f3689d64f2d7c255eff7940]]
Former-commit-id: 13b6adbca54b05698b76567b993d44e0a2291c7c [formerly 695cae15f3b1415b69bfe133af28e7cae0a66be5]
Former-commit-id: 6a52a43ae21dbe8f6ced504beead16771c7f88f9
PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild