This should not change the behavior of it, unless there are multiple top
directories, and then it should behave the same as if there was a single
top directory that was actually above the directory to be created.
Sponsored-by: Dartmouth College's Datalad project
Had to split out some modules because getWorkingDirectory needs unix,
which is not a build-dep of configure.
This commit was sponsored by Brock Spratlen on Patreon.
