* init.cfg (require_selinux_): Also try to see if 'mount' lists the
selinuxfs.
# When in a chroot of an SELinux-enabled system, but with a mock-simulated
# SELinux-*disabled* system, recognize that SELinux is disabled system wide:
grep 'selinuxfs$' /proc/filesystems > /dev/null \
+ || { mount | grep ' type selinuxfs ' > /dev/null; } \
|| skip_ "this system lacks SELinux support"
# Independent of whether SELinux is enabled system-wide,