Minor enhancements to Python config stuff: - Add support for assigning NULL to SimObject pointers.  In Python, this is a special value, distinct from None. - Initial, incomplete pass at regenerating C++ parameter code (declarations and INIT_PARAM macros) from .odesc files.
Minor enhancements to Python config stuff:
- Add support for assigning NULL to SimObject pointers.  In Python,
this is a special value, distinct from None.
- Initial, incomplete pass at regenerating C++ parameter code (declarations
and INIT_PARAM macros) from .odesc files.

util/config/m5config.py:
    - Add support for assigning NULL to SimObject pointers.  In Python,
    this is a special value, distinct from None.
    - Initial, incomplete pass at regenerating C++ parameter code (declarations
    and INIT_PARAM macros) from .odesc files.

--HG--
extra : convert_revision : d7ae8f32e30b3c0829fd1a60589dd998e2e0d0d7

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