Avoid embedding user and time in version from getversion.sh

Avoid embedding user and time in version from getversion.sh

Last-Update: 2020-10-27

Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=971400
Author: Vagrant Cascadian <vagrant@reproducible-builds.org>

The getversion.sh script embeds the build time and user who built the
binary, which breaks reproducible builds:

  https://reproducible-builds.org/

Without this patch, "/usr/bin/futility" embeds differing information
in the binary:

  unknown 2020-09-17 07:53:52 pbuilder1 vs. unknown 2021-10-21 16:19:17 pbuilder2

Gbp-Pq: Name do-not-embed-user-and-time-in-version.patch