Can now easily use modes generated on the fly.
diff --git a/libcelt/modes.c b/libcelt/modes.c
index c28a42d..7eb2e02 100644
--- a/libcelt/modes.c
+++ b/libcelt/modes.c
@@ -29,6 +29,7 @@
    SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
 
+#include "celt.h"
 #include "modes.h"
 #include "os_support.h"