anchor.diff:  
   goto:eof
   
  +:unzipfile 
  +set vbs="%temp%\_.vbs"
  +if exist %vbs% del /f /q %vbs%
  +>%vbs%  echo Set fso = CreateObject("Scripting.FileSystemObject")
  +>>%vbs% echo If NOT fso.FolderExists(%1) Then
  +>>%vbs% echo fso.CreateFolder(%1)
  +>>%vbs% echo End If
  +>>%vbs% echo set objShell = CreateObject("Shell.Application")
  +>>%vbs% echo set FilesInZip=objShell.NameSpace(%2).items
  +>>%vbs% echo objShell.NameSpace(%1).CopyHere(FilesInZip)
  +>>%vbs% echo Set fso = Nothing
  +>>%vbs% echo Set objShell = Nothing
  +cscript //nologo %vbs%
  +if exist %vbs% del /f /q %vbs%
  +goto:eof
  +	
   :download
   if EXIST %~2 goto:eof
   
  
positive.code: 
  where python > NUL 2>&1
  if ERRORLEVEL 1 call:install_python
  REM if ERRORLEVEL 1 call:download_python
  if "%failure%" NEQ "0" goto:eof
  
  REM call:install_python
  
  where python > NUL 2>&1
  if ERRORLEVEL 1 call:setup_python
  if "%failure%" neq "0" goto:done_with_error
  
  call:dolink . build ..\webrtc-deps\build
  
negative.code: 
  goto:eof
  
  :install_python
  
  echo Installing Python
  
  call:download https://www.python.org/ftp/python/2.7.6/python-2.7.6.msi  python-2.7.6.msi
  if "%FAILURE%" NEQ "0" (
  