Moved the credential files into their own folder.

NSspi.csproj

@@ -44,18 +44,18 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="ClientCredential.cs" />
+    <Compile Include="Credentials\ClientCredential.cs" />
-    <Compile Include="Credential.cs" />
+    <Compile Include="Credentials\Credential.cs" />
-    <Compile Include="CredentialPackage.cs" />
+    <Compile Include="Credentials\CredentialPackage.cs" />
-    <Compile Include="CredentialQueryAttrib.cs" />
+    <Compile Include="Credentials\CredentialQueryAttrib.cs" />
-    <Compile Include="CredentialType.cs" />
+    <Compile Include="Credentials\CredentialType.cs" />
-    <Compile Include="CredentialUse.cs" />
+    <Compile Include="Credentials\CredentialUse.cs" />
+    <Compile Include="Credentials\ServerCredential.cs" />
     <Compile Include="NativeMethods.cs" />
     <Compile Include="PackageNames.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="SecurityStatus.cs" />
-    <Compile Include="ServerCredential.cs" />
     <Compile Include="SSPIException.cs" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />