Squashed 'props.lv2/' changes from 70700f5..968816f
Squashed 'props.lv2/' changes from 70700f5..968816f

968816f migrate to lv2_atom_object_get from *_query.

git-subtree-dir: props.lv2
git-subtree-split: 968816f5744f3886feaa2fa9bb8104f938dfc6ff

OpenMusicKontrollers/eteroj.lv2,OpenMusicKontrollers/eteroj.lv2