Added building support for x64 and VC++ 12.

Signed-off-by: Dimitar Dobrev <dpldobrev@yahoo.com>

build/GenerateProjects.bat

@@ -7,12 +7,14 @@ echo.
 echo [0] Clean
 echo [1] Visual C++ 2010
 echo [2] Visual C++ 2012
-echo [3] GNU Make
+echo [3] Visual C++ 2013
+echo [4] GNU Make
 echo.
 
 :choice
 set /P C="Choice: "
-if "%C%"=="3" goto gmake
+if "%C%"=="4" goto gmake
+if "%C%"=="3" goto vs2013
 if "%C%"=="2" goto vs2012
 if "%C%"=="1" goto vs2010
 if "%C%"=="0" goto clean
@@ -29,6 +31,10 @@ goto quit
 "premake5" --file=premake4.lua vs2012
 goto quit
 
+:vs2013
+"premake5" --file=premake4.lua vs2013
+goto quit
+
 :gmake
 "premake5" --file=premake4.lua gmake
 goto quit

build/premake4.lua

@@ -20,7 +20,7 @@ end
 solution "CppSharp"
 
   configurations { "Debug", "Release" }
-  platforms { "x32" }
+  platforms { "x32", "x64" }
   flags { common_flags }
   
   location (builddir)
@@ -30,7 +30,8 @@ solution "CppSharp"
   debugdir (bindir)
 
   -- startproject "Generator"
-
+  configuration "vs2013"
+    framework "4.0"
 
   configuration "vs2012"
     framework "4.0"