This version of sage_conf is for making a relocatable binary distribution of the Sage distribution using the method proposed in #31076, using SAGE_ROOT=/var/tmp/sage-... and a symlink.

Depends on #29039

CC: @culler

Component: build

Work Issues: update from #31396

Author: Matthias Koeppe

Branch/Commit: u/mkoeppe/version_of_package_sage_conf_for_relocatable_binary_distributions @ 70cc566

Issue created by migration from https://trac.sagemath.org/ticket/31417