re-added .NET File IO support, to try and get closer to RomVault working on Linux/Mono.

ROMVault2/ROMVault2.csproj

@@ -35,7 +35,7 @@
     <DebugSymbols>true</DebugSymbols>
     <DebugType>full</DebugType>
     <Optimize>false</Optimize>
-    <OutputPath>.\</OutputPath>
+    <OutputPath>Stage\</OutputPath>
     <DefineConstants>TRACE;DEBUG;UNMANAGED;COMPRESS;LZMA_STREAM;DOTNET20</DefineConstants>
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
@@ -333,4 +333,4 @@
   <Target Name="AfterBuild">
   </Target>
   -->
-</Project>
+</Project>