Added and re-added VS2010 solution files.

VisualC/SDL.sln

-Microsoft Visual Studio Solution File, Format Version 9.00
-# Visual C++ Express 2005
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SDL", "SDL\SDL.vcproj", "{81CE8DAF-EBB2-4761-8E45-B71ABCCA8C68}"
+Microsoft Visual Studio Solution File, Format Version 11.00
+# Visual Studio 2010
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SDL", "SDL\SDL.vcxproj", "{81CE8DAF-EBB2-4761-8E45-B71ABCCA8C68}"
 EndProject
-Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SDLmain", "SDLmain\SDLmain.vcproj", "{DA956FD3-E142-46F2-9DD5-C78BEBB56B7A}"
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SDLmain", "SDLmain\SDLmain.vcxproj", "{DA956FD3-E142-46F2-9DD5-C78BEBB56B7A}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

VisualC/tests/testshape/testshape.vcxproj

@@ -11,7 +11,7 @@
     </ProjectConfiguration>
   </ItemGroup>
   <PropertyGroup Label="Globals">
-    <ProjectGuid>{18BAE08C-319A-46DF-A7F1-1884F5040257}</ProjectGuid>
+    <ProjectGuid>{EDEA9D00-AF64-45DE-8F60-5957048F2F0F}</ProjectGuid>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">