Added Lua Stuff

There are a few changes to the core Rainmeter code.

Library/lua/LuaManager.cpp

@@ -0,0 +1,73 @@
+#include "LuaManager.h"
+#include "../Rainmeter.h"
+
+#include "lua_measure.h"
+#include "lua_meter.h"
+#include "lua_group.h"
+#include "lua_meterwindow.h"
+#include "lua_rainmeter.h"
+#include "lua_meterstring.h"
+#include "lua_meterimage.h"
+
+#include "lua_rainmeter_ext.h"
+
+
+bool LuaManager::m_bInitialized = false;
+lua_State* LuaManager::m_pState = 0;
+
+void LuaManager::Init()
+{
+	if(m_pState == 0)
+	{
+
+		// initialize Lua 
+		m_pState = lua_open();
+
+		//load Lua base libraries
+		luaL_openlibs(m_pState);
+
+		tolua_measure_open(m_pState);
+		tolua_group_open(m_pState);
+		tolua_meter_open(m_pState);
+		tolua_meterwindow_open(m_pState);
+		tolua_rainmeter_open(m_pState);
+		tolua_meter_string_open(m_pState);
+		//tolua_meter_image_open(m_pState);
+
+		luaopen_rainmeter_ext(m_pState);
+
+	}
+}
+
+void LuaManager::CleanUp()
+{
+	lua_close(m_pState);
+}
+
+void LuaManager::ReportErrors(lua_State * L)
+{
+
+	LuaLog("Lua Error: %s", lua_tostring(L, -1));
+	lua_pop(L, 1);
+
+} 
+
+void LuaManager::LuaLog(const char* format, ... )
+{
+	char buffer[4096];
+    va_list args;
+    va_start( args, format );
+
+    _vsnprintf(buffer, 4096, format, args );
+
+#ifndef _DEBUG
+	// Forcing output to the Debug Output window!
+	OutputDebugStringA(buffer);
+	OutputDebugStringA("\n");
+#endif
+
+	std::wstring str = ConvertToWide(buffer);
+
+	LSLog(3,L"Lua", str.c_str());
+	va_end(args);
+}