add show system-stats commands Ok Stsp@

Use proper english :) initialised not initalized and give an informative error

This is to allow nsh users to avail of systat functionality useful for queue stats and pf stats added full suite of systat features except nfs as I dont think those features are as interesting for a network appliance

When file contents were stored in /etc/nshrc in a rules directive, such as contents of /etc/motd or sshd_config, empty lines were being stripped. ok Tom

The assumption that nsh always runs in rdomain 0 is invalid. Stop assuming that cli_rtable is set to zero by default, and switch the nsh process rdomain accordingly as needed. Tests + ok Tom

Fixes behaviour when nsh starts in a non-default rdomain. We used to assume to start out in rdomain 0, which is not necessarily the case. ok Tom

ok Tom

Should fix github issue #163 as a side effect

add logger command for entering messages into the ..

move /etc/motd on import so the sym link works then

system log or /var/log/messages

.. with shell script instead based on feedback from STSP

mandoc -Tlint