* don't show the cycles when generating the build plan
(we have other places that show it now)
* interleave the different build types when generating jobs
* make the src jobs depend on the non-src jobs, as src builds
depend on eiher msys or ucrt64 build results and otherwise
will just stop due to missing deps. Could be improved by only
depending on msys/ucrt64, but this is still an improvement.