- fixed a bug with OBJReader that prevented the material color to be loaded correctly

- added a corresponding unittest

Thanks for the patch by Karthik Nathan

closes #1473

git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@823 fdac6126-5c0c-442c-9429-916003d36597

src/Unittests/TestFiles/square_material.obj

@@ -0,0 +1,13 @@
+mtllib square_material.mtl
+
+v 0.000000 2.000000 0.000000
+v 0.000000 0.000000 0.000000
+v 2.000000 0.000000 0.000000
+v 2.000000 2.000000 0.000000
+vt 0.000000 1.000000 0.000000
+vt 0.000000 0.000000 0.000000
+vt 1.000000 0.000000 0.000000
+vt 1.000000 1.000000 0.000000
+
+usemtl Colored
+f 1/1 2/2 3/3 4/4