Automatically deduce the type in luax_checktype, luax_getmodule, luax_optmodule and luax_totype

--HG--
branch : dynamiccore2

src/modules/sound/wrap_Decoder.cpp

@@ -31,7 +31,7 @@ namespace sound
 
 Decoder *luax_checkdecoder(lua_State *L, int idx)
 {
-	return luax_checktype<Decoder>(L, idx, Decoder::type);
+	return luax_checktype<Decoder>(L, idx);
 }
 
 int w_Decoder_getChannels(lua_State *L)

src/modules/sound/wrap_SoundData.cpp

@@ -39,7 +39,7 @@ namespace sound
 
 SoundData *luax_checksounddata(lua_State *L, int idx)
 {
-	return luax_checktype<SoundData>(L, idx, SoundData::type);
+	return luax_checktype<SoundData>(L, idx);
 }
 
 int w_SoundData_getChannels(lua_State *L)