In *nix, the versioned SONAME is used to be able to co-install different 
versions of the library concurrently. Csound does use this concept in it's 
library. However, by default plugins aren't versioned, but are tied to the 
library. I suggest changing the default installation directory for plugins 
from PREFIX/lib/csound/plugins(64) to PREFIX/lib/csound/plugins(64)-SOVERSION 
(currently 5.1). The attached patch does this. Are there any objections to 
applying it? It only makes a difference in linux.

Saludos,
Felipe Sateler