New version of IPMI driver

I've split up the driver, creating working 2.4.19 and 2.5.31 versions of the driver (and even tested them!) and split the emulation code into a separate patch.

I also noticed that 2.5.31 timer interrupts occur at 1ms instead of 10ms, so it should provide acceptable speed without high-res timers. 2.4 without high-res timers or interrupts will still be very slow.

I have not yet tested interrupts, because I don't have a card that supports them (it's on its way). However, that's pretty straightforward.

The web page is http://home.attbi.com/~minyard

Please, try it out and tell me what you think. Again, I'm shooting for getting this in the mainstream kernel.

-Corey