Add missing VS project files, generated by script
diff --git a/visualc/VS2010/dh_genprime.vcxproj b/visualc/VS2010/dh_genprime.vcxproj
index 87dce92..9ea6aef 100644
--- a/visualc/VS2010/dh_genprime.vcxproj
+++ b/visualc/VS2010/dh_genprime.vcxproj
@@ -27,7 +27,7 @@
     </ProjectReference>

   </ItemGroup>

   <PropertyGroup Label="Globals">

-    <ProjectGuid>{83BCC55C-5216-41BD-865B-E38FAB399454}</ProjectGuid>

+    <ProjectGuid>{54880004-9AA2-434D-A2F0-7F59D6F1536A}</ProjectGuid>

     <Keyword>Win32Proj</Keyword>

     <RootNamespace>dh_genprime</RootNamespace>

   </PropertyGroup>

@@ -166,4 +166,4 @@
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />

   <ImportGroup Label="ExtensionTargets">

   </ImportGroup>

-</Project>
\ No newline at end of file
+</Project>