add a debugging mode that just dumps all identifiers to stdout
clean out some crappy logic in the token renamer, hopefully it's
clearer now
bit of cleaning up and debugging
comment tweak

add a few patterns to the peephole reducer
one more pattern
add an option to turn off all of c-reduce's passes
tiny bit of prettifying
fix a couple typos

might have figured out something that's wrong with parallel mode,
added a FIXME but didn't fix it yet