Unit test Visual Studio project should use the same output path as the other projects

VS2012/unit_test/unit_test.vcxproj

@@ -39,9 +39,11 @@
   <PropertyGroup Label="UserMacros" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <LinkIncremental>true</LinkIncremental>
+    <OutDir>$(SolutionDir)\$(Configuration)\$(Platform)\</OutDir>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
     <LinkIncremental>false</LinkIncremental>
+    <OutDir>$(SolutionDir)\$(Configuration)\$(Platform)\</OutDir>
   </PropertyGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
     <ClCompile>