Remove copys from isa_desc, and implement a store and forward bus bridge
Remove copys from isa_desc, and implement a store and forward bus bridge

arch/alpha/isa_desc:
    Just to make sure, remove the new copy instructions until everything works.

--HG--
extra : convert_revision : cdd3d4c8fa415175aaee04f4a99340dcf82dbc3a

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