common.subr: Change handling of internal errors. They now - return 64 or 70 - print always an error message to stderr - set the given option variable to the null value - unset OPTARG in *every* case. This is independent whether the short options start with an `:' character or not.

#!/bin/sh

_TESTHOME="/home/fag/work/ports/sysutils/local-bsdtools"

#ln -sf "${_TESTHOME}/tests/fbhyve/rc.conf.test /etc/rc.conf.d/fbhyve

#rc_debug=YES

fbhyve_enable=YES

fbhyve_list="xxx yyy"

fbhyve_xxx_config="${_TESTHOME}/tests/fbhyve/vm_xxx_pc03.config"