7z: SevenZip cannot build in parallel
7z: SevenZip cannot build in parallel

Former-commit-id: 97595b1280c9a7affc061ac34c11b97cd2fa72c4
Former-commit-id: 2806c5a7f2c5e4b01c311ca5160e8f6844179e1b [formerly a8db4b527393e54603100e93f2cfc1ab6fcfc8d8] [formerly ef9206fb304816aa0b36f6cd3aa0b3365332e54f [formerly 82f21b64cf3b76d85d9ef8035289cdc5fb630290]]
Former-commit-id: 6ce926ac86f0eae72d5842a77fb2b2a7f1a253b1 [formerly c5a0e2c3ded9d2feadb8d9ba54d0e40d45789736]
Former-commit-id: 5b4d141b85ee40ad1af86fec809b738191a697f1
PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild,PolyJIT/benchbuild