anchor.diff:  
   set BOOST_TOOLSET=msvc-10.0
   set BOOST_VERSION=1_53_0
  +set BZIP_VERSION=1.0.6
   set WIN_SDK_VERSION=7.1
   set ZIP7=%PROGRAMFILES%\7-zip\7z.exe
  +set ZLIB_FILE_VERSION=127
  +set ZLIB_VERSION=1.2.7
   
   :: I like to copy %WIN_SDK%\Bin\SetEnv.cmd to %WIN_SDK%\Bin\SetEnvNc.cmd to
   :: remove the two "COLOR 0x" calls and the CLS call - just for nicer output.
  
positive.code: goto :EOF
  
  :main
  if not exist "%~dp0build" md "%~dp0build"
  call:build x64 release
  call:build x86 release
  
negative.code: set SET_ENV=%WIN_SDK%\Bin\SetEnvNc.cmd
  if not exist "%SET_ENV%" set SET_ENV=%WIN_SDK%\Bin\SetEnv.cmd
  goto main
  
  :: usage: call:extract input-file output-dir
  :extract
  ::if not exist "%~2" (
    @echo Extracting "%~1" to "%~2"
    "%ZIP7%" x -o"%~2" "%~1" > nul
    if errorlevel 1 (
      echo Failed to extract "%~1"
      pause
      exit errorlevel
    )
  ::)
  goto :EOF
  
  :: usage: call:configureWinSDK x86|x64|ia64 debug|release [/vista^|/xp^|/2003^|/2008^|/win7]
  :configureWinSDK
  