Reset .dict file mtime to start of the epoch before compressing with dictzip.
* gnu/packages/patches/freedict-tools-fix-determinism.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/dictionaries.scm (freedict-tools): Use it.
Signed-off-by: Runciter <runciter@whispers-vpn.org>
Signed-off-by: Ludovic Courtès <ludo@gnu.org>