Changes earmarked 'purely cosmetic' by Scott Reynolds:

Changes earmarked 'purely cosmetic' by Scott Reynolds:
>- Remove unused `register' modifier on declarations
>- Reverse the sense of some tests to make the code more clear
>- Type casts per KNF
>- Move a static variable into the only function that uses it
>  (perhaps we can eliminate it entirely, someday?)
Also, I went through these files and XXX'ed some things that should be and
fixed a few more formatting problems per KNF.