Make it possible to load Lua dynamically on Unix. (Luis Carvalho)
diff --git a/src/config.h.in b/src/config.h.in
index 3e86b84..2a28e0e 100644
--- a/src/config.h.in
+++ b/src/config.h.in
@@ -319,6 +319,9 @@
 /* Define if you want to include the Lua interpreter. */
 #undef FEAT_LUA
 
+/* Define for linking via dlopen() or LoadLibrary() */
+#undef DYNAMIC_LUA
+
 /* Define if you want to include the MzScheme interpreter. */
 #undef FEAT_MZSCHEME