[Libguestfs] relicense module spawn-pipe

hi, I would like to use the module spawn-pipe in a library called libguestfs to make it compileable under mingw. currently the library is using the fork/exec combination which doesnt compile under mingw (mingw doesnt support fork). spawn-pipe looks like a good replacement, however it is licensed GPL which is a problem for an LGPL library. Is it possible to relicense that module (and its dependencies) to be LGPL instead ? Thanks, Or