Developed in-house, fed to community. Developed in order to
reflect community issue.
http://redmine.lighttpd.net/issues/2421
Awaiting accept.

--- src/mod_cml_lua.c.orig	2012-10-22 06:17:17.418886286 -0700
+++ src/mod_cml_lua.c	2012-10-22 06:25:50.289753316 -0700
@@ -28,6 +28,10 @@
 #include <lualib.h>
 #include <lauxlib.h>
 
+#if LUA_VERSION_NUM >= 502
+#define LUA_GLOBALSINDEX LUA_REGISTRYINDEX
+#endif
+
 typedef struct {
 	stream st;
 	int done;
@@ -285,7 +285,11 @@
 	lua_settable(L, LUA_GLOBALSINDEX);
 
 	/* load lua program */
+#if LUA_VERSION_NUM >= 502
+	if (lua_load(L, load_file, &rm, fn->ptr, NULL) || lua_pcall(L,0,1,0)) {
+#else
 	if (lua_load(L, load_file, &rm, fn->ptr) || lua_pcall(L,0,1,0)) {
+#endif
 		log_error_write(srv, __FILE__, __LINE__, "s",
 				lua_tostring(L,-1));

--- src/mod_magnet.c	2011-06-13 04:17:01.000000000 -0700
+++ src/mod_magnet.c2	2013-10-01 06:39:18.771549986 -0700
@@ -24,6 +24,10 @@
 #define MAGNET_CONFIG_PHYSICAL_PATH "magnet.attract-physical-path-to"
 #define MAGNET_RESTART_REQUEST      99
 
+#if LUA_VERSION_NUM >= 502
+#define LUA_GLOBALSINDEX LUA_REGISTRYINDEX
+#endif
+
 /* plugin config for all request/connections */
 
 static jmp_buf exceptionjmp;