This reverts commit 2d4da30fde. This Gnulib update was causing failures related to timezones in stime.c. I tried to fix it by adopting the time_rz module from gnulib but that then caused other failures. We can try again later.
2d4da30fde
* Makefile.am (EXTRA_DIST): Add `m4/gnulib-cache.m4'. * build-aux/git-version-gen: Keep unchanged.