Remove the C build tool, which never worked and isn't something I want to finish anyway.
The build wrapper shell script now works against the Haskell-based build tool.
Ignore the directory used by the Haskell-based build tool.
Remove this file, which is obsoleted by the existence of the Haskell build tool.
Follow the path of least resistance, by having make-keywords.c know about the directory structure here in order to find modern.h.
Add process to the list of build-dependencies for the Haskell build tool, because it's actually invoking things now.
I dunno.  The tool does something now, sort of.
Oops - need to configure the Haskell build tool, as well as building it...
Prep work for JSON Buildfiles, which don't exist or work yet.