* Include all SSDP data in discovery info
* Use UPnP device description as discovery info, inject some SSDP attrs
* Clean up attribute names
* Adapt existing SSDP flows to changed attribute names
* Prefix all SSDP UPnP attribute name constants with ATTR_UPNP, tweak a bit
* SSDP matching improvements
- support multiple match groups per domain
- require matches on all, not any item in a group
- support matching on all UPnP device description data
* Manifest structure fixes
Ville Skyttä
Bas Nijholt
Paulus Schoutsen