stage-data/dest-install-pkglist.sh: pkglist-x86_64: do not use multilib.
functions/runner: _prepare_stage_chroot: issue `touch`, not `mkdir -p`, when bind-mounting a config file.
Merge /mnt/data1/__install/arch
stage-list-pool/2-install-main/2-build: add 0-util-git-config.sh to configure Git user name/email prior to building.

Build framework uses Git for its internal operations.
system: update checkout.

Submodule system 4113b6f..4da9175:
> framework: update checkout.