These are intended to indicate what size of program space is in use, and hence
how to get at the PSR bits. They're currently set automatically by the CPU
type options.
tree into the new arm substree. All moved files are relinked with a stub that included
the file from the new location; this might be done better later.
arm32/arm32/machdep.c into arm/arm/sig_machdep.c, merging and ANSIfying in
the process.
The code is based on the arm32 version, so I don't think anything should break
there.
arm32/arm32/in_cksum_arm32.c -> arm/arm/in_cksum_arm.c
Also move specification of other checksum stuff to files.arm, even though we
use the MI code for that.