- add the test file that led to fix r1183 to the regression test suite. See https://sourceforge.net/projects/assimp/forums/forum/817654/topic/5052480 (I hope the licensing classification is right, if not, please inform me).

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1185 67173fc5-114c-0410-ac8e-9d2fd5bffc1f