Check if we can build Orange libraries dynamically-only on Linux

[mitar]

Currently we are building static liborange_include.a and then continue building+linking shared libraries. We should check if this is really necessary to do so or maybe we can build them all shared.

Maybe we just didn't know how to do it properly at that time. Or maybe there are some other problems (references, counting) why this is necessary so.

It is not necessary on Windows.