fixed: support collada-dom 2.3.1 which installs headers in        <prefix>/include/collada-dom
fixed: support collada-dom 2.3.1 which installs headers in
       <prefix>/include/collada-dom

jondo2010/OpenSG,jondo2010/OpenSG,jondo2010/OpenSG,jondo2010/OpenSG,jondo2010/OpenSG