util-src/*.c: Invert Lua 5.2 compat to be 5.2+ by default and a macro to support 5.1

util-src/encodings.c

@@ -21,8 +21,8 @@
 #include "lua.h"
 #include "lauxlib.h"
 
-#if (LUA_VERSION_NUM == 502)
-#define luaL_register(L, N, R) luaL_setfuncs(L, R, 0)
+#if (LUA_VERSION_NUM == 501)
+#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
 #endif
 
 /***************** BASE64 *****************/
@@ -530,19 +530,19 @@ LUALIB_API int luaopen_util_encodings(lua_State* L) {
 	lua_newtable(L);
 
 	lua_newtable(L);
-	luaL_register(L, NULL, Reg_base64);
+	luaL_setfuncs(L, Reg_base64, 0);
 	lua_setfield(L, -2, "base64");
 
 	lua_newtable(L);
-	luaL_register(L, NULL, Reg_stringprep);
+	luaL_setfuncs(L, Reg_stringprep, 0);
 	lua_setfield(L, -2, "stringprep");
 
 	lua_newtable(L);
-	luaL_register(L, NULL, Reg_idna);
+	luaL_setfuncs(L, Reg_idna, 0);
 	lua_setfield(L, -2, "idna");
 
 	lua_newtable(L);
-	luaL_register(L, NULL, Reg_utf8);
+	luaL_setfuncs(L, Reg_utf8, 0);
 	lua_setfield(L, -2, "utf8");
 
 	lua_pushliteral(L, "-3.14");

util-src/hashes.c

@@ -27,8 +27,8 @@ typedef unsigned __int32 uint32_t;
 #include <openssl/sha.h>
 #include <openssl/md5.h>
 
-#if (LUA_VERSION_NUM == 502)
-#define luaL_register(L, N, R) luaL_setfuncs(L, R, 0)
+#if (LUA_VERSION_NUM == 501)
+#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
 #endif
 
 #define HMAC_IPAD 0x36363636
@@ -213,7 +213,7 @@ static const luaL_Reg Reg[] = {
 
 LUALIB_API int luaopen_util_hashes(lua_State* L) {
 	lua_newtable(L);
-	luaL_register(L, NULL, Reg);
+	luaL_setfuncs(L, Reg, 0);;
 	lua_pushliteral(L, "-3.14");
 	lua_setfield(L, -2, "version");
 	return 1;

util-src/net.c

@@ -26,8 +26,8 @@
 #include <lua.h>
 #include <lauxlib.h>
 
-#if (LUA_VERSION_NUM == 502)
-#define luaL_register(L, N, R) luaL_setfuncs(L, R, 0)
+#if (LUA_VERSION_NUM == 501)
+#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
 #endif
 
 /* Enumerate all locally configured IP addresses */
@@ -131,6 +131,6 @@ int luaopen_util_net(lua_State* L) {
 	};
 
 	lua_newtable(L);
-	luaL_register(L, NULL,  exports);
+	luaL_setfuncs(L, exports, 0);
 	return 1;
 }

util-src/pposix.c

@@ -35,8 +35,8 @@
 #include "lualib.h"
 #include "lauxlib.h"
 
-#if (LUA_VERSION_NUM == 502)
-#define luaL_register(L, N, R) luaL_setfuncs(L, R, 0)
+#if (LUA_VERSION_NUM == 501)
+#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
 #endif
 
 #include <fcntl.h>
@@ -803,7 +803,7 @@ int luaopen_util_pposix(lua_State* L) {
 	};
 
 	lua_newtable(L);
-	luaL_register(L, NULL,  exports);
+	luaL_setfuncs(L, exports, 0);
 
 	lua_pushliteral(L, "pposix");
 	lua_setfield(L, -2, "_NAME");

util-src/signal.c

@@ -32,8 +32,8 @@
 #include "lua.h"
 #include "lauxlib.h"
 
-#if (LUA_VERSION_NUM == 502)
-#define luaL_register(L, N, R) luaL_setfuncs(L, R, 0)
+#if (LUA_VERSION_NUM == 501)
+#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
 #endif
 
 #ifndef lsig
@@ -388,7 +388,7 @@ int luaopen_util_signal(lua_State* L) {
 
 	/* add the library */
 	lua_newtable(L);
-	luaL_register(L, NULL, lsignal_lib);
+	luaL_setfuncs(L, lsignal_lib, 0);
 
 	/* push lua_signals table into the registry */
 	/* put the signals inside the library table too,

util-src/windows.c

@@ -19,8 +19,8 @@
 #include "lua.h"
 #include "lauxlib.h"
 
-#if (LUA_VERSION_NUM == 502)
-#define luaL_register(L, N, R) luaL_setfuncs(L, R, 0)
+#if (LUA_VERSION_NUM == 501)
+#define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
 #endif
 
 static int Lget_nameservers(lua_State* L) {
@@ -104,7 +104,7 @@ static const luaL_Reg Reg[] = {
 
 LUALIB_API int luaopen_util_windows(lua_State* L) {
 	lua_newtable(L);
-	luaL_register(L, NULL, Reg);
+	luaL_setfuncs(L, Reg, 0);
 	lua_pushliteral(L, "-3.14");
 	lua_setfield(L, -2, "version");
 	return 1;