Ogre installs libraries in /usr/lib/OGRE but never sets up the linker path.
It could do with a version bump to 1.0.1 as well.
ogre installs plugins into /usr/lib/OGRE/, the libraries you link against are placed in /usr/lib/
cgkit-2 dlopens the plugins, and needs /usr/lib/OGRE to be in the link path. I don't know what other ogre apps do, I expected it to be the same, but if not cgkit will have to be patched.
afaik, OGRE provides an interface for accessing plugins ... packages should not being doing dlopen() themselves ... for example, the plugins.cfg file allows you to specify a plugin dir and the plugins to load