I think _t-univ.scm is useless for most people, so I have the following suggestion:
Distribute gambit in git with _t-univ.c not incorporated into the build by “make from-scratch”.
Then add an “enable-universal” configure option to rebuild gambit with _t-univ.scm if someone wants it.
Then perhaps later we can have an “enable-universal-remote” configuration option.
Brad