Often gnulib has relicensed modules for use in LGPLv2+ packages (such as
Some modules have also be relicensed for use in "dual LGPLv3+ or GPLv2"
packages (such as GNU libunistring). 
Today, I would like to ask for relicensing of specific modules for use in
GPLv2+ programs, namely GNU clisp.
GNU clisp is under GPLv2+, not GPLv3+, because it was designed, from the
beginning, as a vehicle for running computer algebra systems. The most
prominent computer algebra system written in Lisp is Maxima, and is under
GPLv2. If clisp was only distributed under GPLv3+, one could no longer
distribute maxima with/in clisp.
So, regarding gnulib, I'd like
1) to introduce an option --gpl=v2+ that, like the --lgpl option, verifies
license compatibility and updates the copyright header in the source
2) ask for relicensing LGPL -> 'LGPLv3+ or GPLv2' of the modules
strftime, nstrftime, time_rz, tzset
3) ask for relicensing GPL -> GPLv2+ of the modules
Can we go ahead, as usual, with per-module approval by the authors of said