Allow "let" blocks to add code to the output files.
Allow "let" blocks to add code to the output files.

--HG--
extra : convert_revision : 0ffddb2b40dccbf2a3790464c843cfc1b43eaa02

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