anchor.diff:  REM through all of the search paths to try and find it. If that fails, then we
   REM continue onto the next downloader tool.
   :check_wget
  +if not defined WGET_OPTS ( set "WGET_OPTS=-nc" ) else if defined WGET_OPTS ( set "WGET_OPTS=%WGET_OPTS% -nc" )
  +if not defined PACKER_DEBUG ( set "WGET_OPTS=%WGET_OPTS% -nv" ) else if defined PACKER_DEBUG if "%PACKER_DEBUG%" == "0" set "WGET_OPTS=%WGET_OPTS% -nv"
  +
   set wget=
   for %%i in (wget.exe) do set wget=%%~$PATH:i
   if defined wget goto wget
  
positive.code: 
  "%wget%" --version >NUL 2>NUL
  if errorlevel 1 goto check_bitsadmin
  
  if not defined WGET_OPTS ( set "WGET_OPTS=-nc" ) else if defined WGET_OPTS ( set "WGET_OPTS=%WGET_OPTS% -nc" )
  if not defined PACKER_DEBUG ( set "WGET_OPTS=%WGET_OPTS% -nv" ) else if defined PACKER_DEBUG if "%PACKER_DEBUG%" == "0" set "WGET_OPTS=%WGET_OPTS% -nv"
  
  REM Use wget to download the file to the path that was specified. If we don't
  REM succeed, then we just try again with bitsadmin.
  
negative.code: 
  "%curl%" --version >NUL 2>NUL
  if errorlevel 1 goto exit1
  
  REM It seems that curl works. We're pretty fortunate since it was pretty much
  REM our very last shot. So let's try and download the url that the caller
  