Revert RakNet source files back to the original v2.518 state

* Add RakNet source files to the VS project

raknet/PacketFileLogger.cpp

@@ -0,0 +1,22 @@
+#include "PacketFileLogger.h"
+#include "GetTime.h"
+
+PacketFileLogger::~PacketFileLogger()
+{
+	fclose(packetLogFile);
+}
+void PacketFileLogger::OnAttach(RakPeerInterface *peer)
+{
+	PacketLogger::OnAttach(peer);
+
+	// Open file for writing
+	char filename[256];
+	sprintf(filename, "PacketLog%i.csv", RakNet::GetTime());
+	packetLogFile = fopen(filename, "wt");
+	LogHeader();
+}
+
+void PacketFileLogger::WriteLog(const char *str)
+{
+	fputs(str, packetLogFile);
+}