Added checks against libcurl version to decide what features are used or not
Added checks against libcurl version to decide what features are used or not


artoolkit/osg,artoolkit/osg,marchelbling/osg,jtorresfabra/osg,jtorresfabra/osg,marchelbling/osg,marchelbling/osg,tomasthoresen/osg,marchelbling/osg,artoolkit/osg,openscenegraph/osg,jtorresfabra/osg,openscenegraph/osg,openscenegraph/osg,scrawl/osg,jtorresfabra/osg,scrawl/osg,artoolkit/osg,scrawl/osg,tomasthoresen/osg,openscenegraph/osg,scrawl/osg,tomasthoresen/osg,tomasthoresen/osg