Link to Boost.Program_options library from CMake

git-svn-id: http://svn.code.sf.net/p/ifcopenshell/svn/trunk@188 68180887-8925-40e4-aed3-789c086970ef
Make .dae support in IfcConvert using OpenCOLLADA optional

git-svn-id: http://svn.code.sf.net/p/ifcopenshell/svn/trunk@189 68180887-8925-40e4-aed3-789c086970ef
Add file to test case execution

git-svn-id: http://svn.code.sf.net/p/ifcopenshell/svn/trunk@190 68180887-8925-40e4-aed3-789c086970ef
Use the precision from the IfcGeometricRepresentationContext to dictate OCC modeler tolerances

git-svn-id: http://svn.code.sf.net/p/ifcopenshell/svn/trunk@191 68180887-8925-40e4-aed3-789c086970ef