Add a comment to smartdict.py.
Add a comment to smartdict.py.

python/m5/smartdict.py:
    Add a comment explaining why this actually works.

--HG--
extra : convert_revision : 39cbde547f4bf6cf626ab1c0b6ef56a5788b09b8

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