New pure-avahi and pure-lilv modules

New pure-avahi and pure-lilv modules have been released. The former lets you browse and publish Zeroconf services on a network using Avahi, the Zeroconf implementation for Linux and other Unix-like systems. The latter provides bindings for David Robillard's Lilv library and lets you run LV2 plugins in Pure. (LV2 is the new Linux audio and MIDI plugin standard, which is supported by popular Linux audio and MIDI software such as Ardour and Qtractor.)