Fix warning flag + versioning

Some UPSes seem to reply with a \0 just before the end of the warning flag (obtained with QWS), as a consequence of that, the string in C is 1 char shorter than expected (the \r
is not within the string). -> Fix voltronic_warning function.
Increase driver versions.
Add devices to HCL
Add unknown/unused and commented capability entries

Might be useful for future versions.