[linux-audio-dev] Update to LADSPA 2 strawman

[Steve Harris]

I've added the port shortnames (ladspa:shortname). This is still tentative
in my mind, but as long as it doesn't cause any serious objections it will
stay.

Following a suggestion from Richard Furze I've removed the LADSPA_Data
type and replaced it with void. The ports are datatyped in the data, but
currently only ladspa:float is supported. I have misgivings about this,
but it seems like a good way to open up to more datatypes in the future.

I'd hate to see a future where there are plugins for translating between
different kinds of boring PCM data, that would suck, but this could allow
for some exciting developments. The first person to make a LADSPA plugin
that speaks 16bit int PCM audio data gets the LART treatment ;)

Thoughts?

- Steve