Fixed IrrKlang lib scope to allow use in external projects
Fixed IrrKlang lib scope to allow use in external projects

projectchrono/chrono,rserban/chrono,dariomangoni/chrono,projectchrono/chrono,projectchrono/chrono,dariomangoni/chrono,rserban/chrono,rserban/chrono,dariomangoni/chrono,rserban/chrono,projectchrono/chrono,rserban/chrono,dariomangoni/chrono,projectchrono/chrono,dariomangoni/chrono,dariomangoni/chrono,projectchrono/chrono,rserban/chrono,rserban/chrono