Compilation and Misc Patches for 2.1.32

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This patch includes (against 2.1.32)

• SMP autodetect thing that actually works.
• Some miscellaneous typo-fixes to make drivers like the shaper and arpd support compile.
• Cut down on the number of compile-time warnings (left some alone because they looked like they were fragments of the ongoing SMP development).
• Fix so you should be able to compile NFS as a module properly.

This is all stuff of my own discovery (apologies for the inclusion of other's patches in my last submission).