Refactored various message-related operations into the Message class.

- Replaces the XPCMessage struct.
 - Messages are now read from a UDPSocket by the Message class.
 - Printing messages to the log is now handled by the Message class.
 - In the future, may extend this class with command-specific subclasses that encapsulate additional message parsing functionality.

xpcPlugin/xpcPlugin/xpcPlugin.vcxproj

@@ -101,6 +101,7 @@
     <ClInclude Include="..\..\C\src\xplaneConnect.h" />
     <ClInclude Include="..\Drawing.h" />
     <ClInclude Include="..\Log.h" />
+    <ClInclude Include="..\Message.h" />
     <ClInclude Include="..\UDPSocket.h" />
     <ClInclude Include="..\xpcPluginTools.h" />
   </ItemGroup>
@@ -108,6 +109,7 @@
     <ClCompile Include="..\..\C\src\xplaneConnect.c" />
     <ClCompile Include="..\Drawing.cpp" />
     <ClCompile Include="..\Log.cpp" />
+    <ClCompile Include="..\Message.cpp" />
     <ClCompile Include="..\UDPSocket.cpp" />
     <ClCompile Include="..\XPCPlugin.cpp" />
     <ClCompile Include="..\xpcPluginTools.cpp" />

xpcPlugin/xpcPlugin/xpcPlugin.vcxproj.filters

@@ -30,6 +30,9 @@
     <ClInclude Include="..\UDPSocket.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="..\Message.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ClCompile Include="..\..\C\src\xplaneConnect.c">
@@ -50,6 +53,9 @@
     <ClCompile Include="..\UDPSocket.cpp">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="..\Message.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <Library Include="..\SDK\Libraries\Win\XPLM.lib">