Thumb mode on ARM

[Mikko Rapeli <mikko.rapeli%teleca.com@localhost>]

Hello,

I wrote down the instructions to get thumb mode userspace working with
NetBSD current:

http://wiki.netbsd.se/How_to_use_thumb_mode_on_ARM

It basically boils down to upgrading binutils and then building machine
independent parts to thumb and machine dependent parts to ARM with a
script.

Comments and additions are welcome.

-Mikko