ARM patches

[Jay Monkman]

Here's some patches to the 20020807 snapshot for ARM.

patch-arm.diff     - fixes a sign extend problem with CPU_swap_u16
patch-irq.diff     - fixes interrupt handling to work with FIQ
patch-net.diff     - fixes for the alignment requirements for ARM
patch-ipalias.diff - Adds IOCTLs to support IP aliasing

The remaining patch, patch-netbuf.diff, is experimental. It adds
support for MBUF and cluster allocation functions so that a system can
get it's network buffer memory from someplace special. This requires a
change to the Configuration structure. I'm sending it out mainly for
feedback.


I have not tested this with this snapshot, I've been using the
20020301 snapshot, and have a fully working system on an ARM9.


-- 
Jay Monkman	    The truth knocks on the door and you say "Go away, I'm 
                    looking for the truth," and so it goes away. Puzzling.
		     - from _Zen_and_the_Art_of_Motorcycle_Maintenance_