[autofit] Mark `aflatin2.[ch]' as not compilable.
diff --git a/src/autofit/aflatin2.c b/src/autofit/aflatin2.c
index 1fab85e..5db4a41 100644
--- a/src/autofit/aflatin2.c
+++ b/src/autofit/aflatin2.c
@@ -1,3 +1,8 @@
+/* ATTENTION: This file doesn't compile. It is only here as a reference */
+/* of an alternative latin hinting algorithm that was always */
+/* marked as experimental. */
+
+
/***************************************************************************/
/* */
/* aflatin2.c */
diff --git a/src/autofit/aflatin2.h b/src/autofit/aflatin2.h
index c17a6a2..f83f704 100644
--- a/src/autofit/aflatin2.h
+++ b/src/autofit/aflatin2.h
@@ -1,3 +1,8 @@
+/* ATTENTION: This file doesn't compile. It is only here as a reference */
+/* of an alternative latin hinting algorithm that was always */
+/* marked as experimental. */
+
+
/***************************************************************************/
/* */
/* aflatin2.h */