and 'fe23acdcae4f7bace1f6ceb4823a13271fe37207'

     and 'd804fb6b50abf7968a0198674912906c60ec9ff0'

     and 'bc18ab31728be1d004b18d113343c50f25f0a678'

     and 'e6920b673f432050c4d56a74a2ff2074a2959e6a'

     and '51ae655150adb03f61e4ead408e1e7d827661dc7'

             to reduce Hash cache thrash (backport from test4)

    * RouterInfo:
      - Don't cache byteified data by default, to save ~1.5 MB
      - Don't create empty peers Set, to save ~100KB

Added proper support for using Core2 machines as P4.
Added support for identifying SSE 3/4.1/4.2/4A support on CPU.