[PATCH 2.5.21] i386 arch subdivision into machine types

[James Bottomley <James.Bottomley@HansenPartnership.com>]

This code rearranges the arch/i386 directory structure to allow for sliding 
additional non-pc hardware in here in an easily separable (and thus easily 
maintainable) fashion.  The idea is that all the code for the particular 
problem hardware should be able to go in a separate directory with only 
additional build options in config.in.

The current patch really only pulls out the visws code from the core and 
places it into a separate directory (sort of a simple example case).  It also 
creates a generic directory (for standard x86 PCs) with all of the hooks 
documented.

This code is a merger with the Patrick Mochel/Dave Jones setup and cpu split.  
It also includes documentation for all of the created hooks inside arch/i386.

The 165k diff file is at

http://www.hansenpartnership.com/voyager/files/arch-split-2.5.21.diff

There's also a bitkeeper repository with all this in at

http://linux-voyager.bkbits.net/arch-split-2.5

James Bottomley