- fixed preprocessor checks for some importers

- fixed warning about shadowing variables in quaternion.h


git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1346 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/IRRLoader.cpp

@@ -45,6 +45,8 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 #include "AssimpPCH.h"
 
+#ifndef ASSIMP_BUILD_NO_IRR_IMPORTER
+
 #include "IRRLoader.h"
 #include "ParsingUtils.h"
 #include "fast_atof.h"
@@ -1471,3 +1473,5 @@ void IRRImporter::InternReadFile( const std::string& pFile,
 	 */
 	return;
 }
+
+#endif // !! ASSIMP_BUILD_NO_IRR_IMPORTER