Hi,

This patch adds zynfusion. The LV2 plugin seems to work well and its
LV2 presets also work.

Some problems that are still pending:
- the binary (standalone) version doesn't work (needs some rtpath-
related patch I'm not sure how to do)
- preset banks are not found by the plugin, even though I patched what
appears to be the paths it looks at

Feel free to edit it.

Thanks,
Alex