added gcc4.7 and gcc4.1 hint for finding TBB user linux

Author: svenwoop

common/cmake/FindTBB.cmake

@@ -122,7 +122,13 @@ ELSE ()
       FIND_LIBRARY(TBB_LIBRARY_MALLOC tbbmalloc PATHS ${EMBREE_TBB_ROOT}/lib NO_DEFAULT_PATH)
     ELSE()
       FIND_PATH(TBB_INCLUDE_DIR tbb/task_scheduler_init.h PATHS ${EMBREE_TBB_ROOT}/include NO_DEFAULT_PATH)
-      SET(TBB_HINTS HINTS ${EMBREE_TBB_ROOT}/lib/intel64/gcc4.4 ${EMBREE_TBB_ROOT}/lib ${EMBREE_TBB_ROOT}/lib64 PATHS /usr/libx86_64-linux-gnu/)
+      SET(TBB_HINTS HINTS
+          ${EMBREE_TBB_ROOT}/lib/intel64/gcc4.7
+          ${EMBREE_TBB_ROOT}/lib/intel64/gcc4.4
+          ${EMBREE_TBB_ROOT}/lib/intel64/gcc4.1
+          ${EMBREE_TBB_ROOT}/lib
+          ${EMBREE_TBB_ROOT}/lib64
+        PATHS /usr/libx86_64-linux-gnu/)
       FIND_LIBRARY(TBB_LIBRARY tbb ${TBB_HINTS})
       FIND_LIBRARY(TBB_LIBRARY_MALLOC tbbmalloc ${TBB_HINTS})
     ENDIF()