cdrkit without cmake

I suspect what's annoying people is that the syntax for cmake is quite
different from configure scripts, and it takes a good bit of manual
reading to figure out how to get a list of per-package compilation options
et al (cmake --help doesn't work for that as far as I can tell: you can
get lists of *all* properties or commands, but not only of those added byt
the thing you're trying to build. I have to resort to reading the
cmakefiles, which is not ideal!)