vc9 compatibility

src/ifcgeom/IfcGeomRenderStyles.h

@@ -23,8 +23,12 @@
 #ifdef __GNUC__
 #include <tr1/array>
 #else
+#if _MSC_VER < 1600
+#include <boost/tr1/array.hpp>
+#else
 #include <array>
 #endif
+#endif
 
 #ifdef USE_IFC4
 #include "../ifcparse/Ifc4.h"

src/ifcparse/SharedPointer.h

@@ -28,7 +28,10 @@
 #include <tr1/memory>
 #define SHARED_PTR std::tr1::shared_ptr
 #else
-#ifdef _MSC_VER
+#if _MSC_VER >= 1600
+// MSVC 2008 does not have shared_ptr by default, but it comes
+// in a feature pack. Therefore for IDEs prior to MSVC 2010 the
+// shared_ptr that ships with boost is used.
 #include <memory>
 #define SHARED_PTR std::tr1::shared_ptr
 #else