updated for version 7.4a.045
Problem:    Configure does not always find the right library for Lua.  Missing
            support for LuaJit.
Solution:   Improve the configure detection of Lua. (Hiroshi Shirosaki)
diff --git a/src/Makefile b/src/Makefile
index 861068b..db50687 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -381,8 +381,12 @@
 # LUA
 # Uncomment one of these when you want to include the Lua interface.
 # First one is for static linking, second one for dynamic loading.
+# Use --with-luajit if you want to use LuaJIT instead of Lua.
+# Set PATH environment variable to find lua or luajit executable.
 #CONF_OPT_LUA = --enable-luainterp
 #CONF_OPT_LUA = --enable-luainterp=dynamic
+#CONF_OPT_LUA = --enable-luainterp --with-luajit
+#CONF_OPT_LUA = --enable-luainterp=dynamic --with-luajit
 # Lua installation dir (when not set uses $LUA_PREFIX or defaults to /usr)
 #CONF_OPT_LUA_PREFIX = --with-lua-prefix=/usr/local