Fixed bugs related to portsreinstall packupgrade and portsreinstall-upgrade.

Fixed bugs related to portsreinstall packupgrade and portsreinstall-upgrade.

 Changes to be committed:
	modified:   lib/chroot-mount/liboptions.sh
	modified:   lib/chroot/libcommand.sh
	modified:   lib/chroot/libcommand_do.sh
	modified:   lib/libcommand.sh
	modified:   lib/libcommand_pkgs.sh
	modified:   lib/libmain.sh
	modified:   lib/libpkgsys.sh
	modified:   lib/main/libcommand.sh
	modified:   lib/main/liboptions.sh
	modified:   lib/upgrade/libcommand.sh
	modified:   lib/upgrade/libcommand_do.sh
	modified:   lib/upgrade/liboptions.sh
	modified:   share/bin/portsreinstall-chroot-mount