SCons: Add check for SCons version since the latest are broken.
SCons: Add check for SCons version since the latest are broken.

--HG--
extra : convert_revision : bb0ea1221214e4e34d4223e345956c3febce3dc9

rjschof/gem5,gedare/gem5,zlfben/gem5,joerocklin/gem5,gedare/gem5,markoshorro/gem5,TUD-OS/gem5-dtu,sobercoder/gem5,aclifton/cpeg853-gem5,zlfben/gem5,briancoutinho0905/2dsampling,rallylee/gem5,kaiyuanl/gem5,SanchayanMaity/gem5,HwisooSo/gemV-update,samueldotj/TeeRISC-Simulator,cancro7/gem5,powerjg/gem5-ci-test,markoshorro/gem5,joerocklin/gem5,austinharris/gem5-riscv,TUD-OS/gem5-dtu,sobercoder/gem5,rallylee/gem5,Weil0ng/gem5,powerjg/gem5-ci-test,Weil0ng/gem5,cancro7/gem5,yb-kim/gemV,KuroeKurose/gem5,KuroeKurose/gem5,cancro7/gem5,rallylee/gem5,rjschof/gem5,cancro7/gem5,rjschof/gem5,rallylee/gem5,gedare/gem5,powerjg/gem5-ci-test,Weil0ng/gem5,kaiyuanl/gem5,zlfben/gem5,SanchayanMaity/gem5,joerocklin/gem5,aclifton/cpeg853-gem5,SanchayanMaity/gem5,briancoutinho0905/2dsampling,joerocklin/gem5,cancro7/gem5,gem5/gem5,gem5/gem5,yb-kim/gemV,KuroeKurose/gem5,rjschof/gem5,briancoutinho0905/2dsampling,HwisooSo/gemV-update,markoshorro/gem5,aclifton/cpeg853-gem5,rallylee/gem5,gem5/gem5,aclifton/cpeg853-gem5,samueldotj/TeeRISC-Simulator,zlfben/gem5,rjschof/gem5,yb-kim/gemV,HwisooSo/gemV-update,gedare/gem5,markoshorro/gem5,gem5/gem5,austinharris/gem5-riscv,gedare/gem5,aclifton/cpeg853-gem5,rallylee/gem5,qizenguf/MLC-STT,rjschof/gem5,briancoutinho0905/2dsampling,yb-kim/gemV,gedare/gem5,markoshorro/gem5,KuroeKurose/gem5,sobercoder/gem5,sobercoder/gem5,qizenguf/MLC-STT,joerocklin/gem5,samueldotj/TeeRISC-Simulator,gedare/gem5,powerjg/gem5-ci-test,kaiyuanl/gem5,gem5/gem5,powerjg/gem5-ci-test,SanchayanMaity/gem5,kaiyuanl/gem5,rallylee/gem5,SanchayanMaity/gem5,zlfben/gem5,Weil0ng/gem5,qizenguf/MLC-STT,SanchayanMaity/gem5,powerjg/gem5-ci-test,TUD-OS/gem5-dtu,Weil0ng/gem5,sobercoder/gem5,qizenguf/MLC-STT,zlfben/gem5,TUD-OS/gem5-dtu,TUD-OS/gem5-dtu,joerocklin/gem5,sobercoder/gem5,briancoutinho0905/2dsampling,austinharris/gem5-riscv,samueldotj/TeeRISC-Simulator,yb-kim/gemV,KuroeKurose/gem5,yb-kim/gemV,aclifton/cpeg853-gem5,aclifton/cpeg853-gem5,briancoutinho0905/2dsampling,KuroeKurose/gem5,yb-kim/gemV,cancro7/gem5,markoshorro/gem5,austinharris/gem5-riscv,austinharris/gem5-riscv,austinharris/gem5-riscv,kaiyuanl/gem5,yb-kim/gemV,TUD-OS/gem5-dtu,KuroeKurose/gem5,austinharris/gem5-riscv,HwisooSo/gemV-update,qizenguf/MLC-STT,samueldotj/TeeRISC-Simulator,rjschof/gem5,powerjg/gem5-ci-test,qizenguf/MLC-STT,qizenguf/MLC-STT,cancro7/gem5,gem5/gem5,briancoutinho0905/2dsampling,zlfben/gem5,kaiyuanl/gem5,samueldotj/TeeRISC-Simulator,SanchayanMaity/gem5,Weil0ng/gem5,kaiyuanl/gem5,samueldotj/TeeRISC-Simulator,joerocklin/gem5,HwisooSo/gemV-update,joerocklin/gem5,TUD-OS/gem5-dtu,markoshorro/gem5,gem5/gem5,HwisooSo/gemV-update,Weil0ng/gem5,HwisooSo/gemV-update,sobercoder/gem5