* added an option to specify ip addresses to which mDNS should bind (ignored by `DNS-SD`)
* changed command line option to `zeroconf-interface` to be consistent with `zeroconf-port`
use builder pattern to DRY up the code
used macro to print warning message
* fixing register error
* renamed `bind_ip` variables to match the option to `zeroconf_ip`, to be more consistent
* Changed user help
Modified comments
Added block for condition to clean the code
Added new modification to the change log
Co-authored-by: setime <timeframe1@gmx.de>
When librespot is built with Avahi turned on, it will crash if Avahi is
later not available at runtime.
This change avoids it crashing hard when Avahi is not available;
librespot will merely warn of the issue.
This affects some distribution packages too, where the maintainer might
prefer leaving Avahi support enabled, but many setups don't (or can't)
run Avahi.
Co-authored-by: Nick Steel <nick@nsteel.co.uk>
