Tang updates

See merge request !41

Fix issue in logger name and in mqtt client configuration (same client_id makes client connect and disconnect all the time)

Added OpenZWave_CUSTOM_INCLUDE to point to custom openzwave installation dir for experimental builds

Proper fix should be to change code to plain C bindings

Dont remember what the symptoms where..

Unsure if this breaks python2... If it does, move to python3 :)

Merge latest fixes from jstrom mqtt-into raspbian buster

See merge request !39

Not tested, since ow lib was unavailable.. move to pywonet or something
instead!

Do not load both when only one is going to be used, in case both where available
Also, give a more detailed error if it fails to load.

If debugging log configuration init, the logging has not yet been inited from commandline/args and uses INFO.
You can now set env var AGO_DEFAULT_LEVEL=TRACE to show even very early trace logging.

unique_ptr<char> uses regular deleter, not delete[]

Move connection/transport/mqtt/qpid to separate logging channels, allow individual levels to be set.

qpid & mqtt low-level libraries are capped to INFO, while agotransport and agoconnection have their separate levels set to TRACE.
Please see system.conf for more details.

Also fix so it actually runs when doing make check.