bulk typos

I needed another distraction so bulk-checked for typos, limited to comments in
*.[ch].

I'm not passionate about this, but it serves the purpose of reducing the
overhead of fixing them individually.

Also I heard something here recently about ugly languages..
time find . -name '*.c' -print0 |xargs -r0 sed -s '/.*\/\*/!d; s///; :l; /\*\/.*/!{N;b l}; s///; s/.*/\L&/' |grep -Eo '[[:alpha:]]{3,}' |sort |uniq -c |sort -nr |awk '$1==1{print $2}' |grep -xFvf /usr/share/dict/words |less

If any of these are disputed or objectionable, I would summarily discard them,
as I'm sure I missed some and fixing every last typo wasn't really the ghoul.

Justin