Set ASSIMP_LIBRARIES to the proper library name

in assimp-config.cmake so that other programs can find it.

assimp-config.cmake.in

@@ -40,9 +40,9 @@ set( ASSIMP_LINK_FLAGS "" )
 set( ASSIMP_LIBRARY_DIRS "${ASSIMP_ROOT_DIR}/@ASSIMP_LIB_INSTALL_DIR@")
 set( ASSIMP_INCLUDE_DIRS "${ASSIMP_ROOT_DIR}/@ASSIMP_INCLUDE_INSTALL_DIR@")
 set( ASSIMP_LIBRARIES assimp${ASSIMP_LIBRARY_SUFFIX})
-if (CMAKE_BUILD_TYPE EQUAL "DEBUG")
-	set( ASSIMP_LIBRARIES ${ASSIMP_LIBRARIES}D)
-endif (CMAKE_BUILD_TYPE EQUAL "DEBUG")
+if (${CMAKE_BUILD_TYPE} STREQUAL "Debug")
+  set( ASSIMP_LIBRARIES ${ASSIMP_LIBRARIES}@ASSIMP_DEBUG_POSTFIX@)
+endif ()
 
 # search for the boost version assimp was compiled with
 #set(Boost_USE_MULTITHREAD ON)