Upgrade to Visual Studio 2015 project files

Change-Id: I5e8424e7150d1aaede8f5a23c34c7fb023959f0c
Reviewed-on: https://swiftshader-review.googlesource.com/5790
Reviewed-by: Nicolas Capens <capn@google.com>
Tested-by: Nicolas Capens <capn@google.com>
diff --git a/src/OpenGL/libGLESv2/libGLESv2.vcxproj b/src/OpenGL/libGLESv2/libGLESv2.vcxproj
index d4a775c..d3eec86 100644
--- a/src/OpenGL/libGLESv2/libGLESv2.vcxproj
+++ b/src/OpenGL/libGLESv2/libGLESv2.vcxproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>

-<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

+<Project DefaultTargets="Build" ToolsVersion="14.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

   <ItemGroup Label="ProjectConfigurations">

     <ProjectConfiguration Include="Debug|Win32">

       <Configuration>Debug</Configuration>

@@ -36,35 +36,35 @@
     <ConfigurationType>DynamicLibrary</ConfigurationType>

     <CharacterSet>NotSet</CharacterSet>

     <WholeProgramOptimization>true</WholeProgramOptimization>

-    <PlatformToolset>v120</PlatformToolset>

+    <PlatformToolset>v140</PlatformToolset>

   </PropertyGroup>

   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">

     <ConfigurationType>DynamicLibrary</ConfigurationType>

     <CharacterSet>NotSet</CharacterSet>

     <WholeProgramOptimization>true</WholeProgramOptimization>

-    <PlatformToolset>v120</PlatformToolset>

+    <PlatformToolset>v140</PlatformToolset>

   </PropertyGroup>

   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Profile|Win32'" Label="Configuration">

     <ConfigurationType>DynamicLibrary</ConfigurationType>

     <CharacterSet>NotSet</CharacterSet>

     <WholeProgramOptimization>true</WholeProgramOptimization>

-    <PlatformToolset>v120</PlatformToolset>

+    <PlatformToolset>v140</PlatformToolset>

   </PropertyGroup>

   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Profile|x64'" Label="Configuration">

     <ConfigurationType>DynamicLibrary</ConfigurationType>

     <CharacterSet>NotSet</CharacterSet>

     <WholeProgramOptimization>true</WholeProgramOptimization>

-    <PlatformToolset>v120</PlatformToolset>

+    <PlatformToolset>v140</PlatformToolset>

   </PropertyGroup>

   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">

     <ConfigurationType>DynamicLibrary</ConfigurationType>

     <CharacterSet>NotSet</CharacterSet>

-    <PlatformToolset>v120</PlatformToolset>

+    <PlatformToolset>v140</PlatformToolset>

   </PropertyGroup>

   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">

     <ConfigurationType>DynamicLibrary</ConfigurationType>

     <CharacterSet>NotSet</CharacterSet>

-    <PlatformToolset>v120</PlatformToolset>

+    <PlatformToolset>v140</PlatformToolset>

   </PropertyGroup>

   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />

   <ImportGroup Label="ExtensionSettings">