Bump version
Many Debian packaging updates

- rename the package to nrpe-ng (from python-nrpe-ng)
- add Breaks/Replaces for python-nrpe-ng
- update init script, systemd service and lintian overrides for rename
- move check_nrpe_ng to /usr/lib/nagios/plugins/
- install Nagios config snippet as check_nrpe_ng.cfg (not nagios_*)
Tweak logging for SIGHUP
Handle SIGTERM more gracefully
Add debian/nrpe-ng.maintscript to simplify upgrades
Debian packaging: remove references to python-nrpe-ng

It won't go into Debian with any of those spurious references anyway.