Bug fixes and enhancements

auto-mark-install-from-source: Fix duplicate port check
auto-gpu-setup: Install drm-kmod from binary package by default (build from source takes too long)
auto-fusefs-install: Install from binary package now that restrictions have been lifted
auto-update-system:
Restart if pacakge replaces itself
Automatically prompt for root pw if needed
Check ownership and perms of all plugins
auto-admin: Prompt for root pw if needed
Other minor bug fixes and enhancements