I wish to add a JNI library, including its shared object (.so) file to my project using Maven. Unfortunately it is not yet on a public repository so I guess I have to install it
As an alternative to unpacking your libraries at runtime, you could store them as jars in Maven but unpack them at build time: http://www.buildanddeploy.com/node/17.
The maven-nativedependencies-plugin plugin will do this for you automatically, as long as you follow their naming convention.