anchor.diff:  echo.
   echo You must either:
   echo.
  -echo   A) install pre-compiled GDAL libraries and their C# bindings, or
  +echo   A) obtain pre-compiled GDAL libraries and their C# bindings, or
   echo   B) build the libraries and C# bindings manually.
   echo.
   echo In either case, the C# bindings must be in installed in this folder:
  
positive.code: set Action=
  if "%~1" == "get"       set Action=get
  if "%~1" == "update"    set Action=update
  if "%~1" == "help"      set Action=help
  if "%~1" == ""          set Action=help
  
  
negative.code: exit /b 1
  
  rem  ------------------------------------------------------------------------
  
  :clean
  
  rem  Delete all the unpacked files
  
  call :deleteFile %GdalAdmin_InstallDir%\README.txt
  call :deleteDir  %GdalAdmin_InstallDir%\managed
  call :deleteDir  %GdalAdmin_InstallDir%\native
  
  goto :eof
  
  rem  ------------------------------------------------------------------------
  
  :deleteFile
  
  if exist "%~1" (
    del "%~1"
    echo Deleted %~1
  )
  goto :eof
  
  rem  ------------------------------------------------------------------------
  
  :deleteDir
  
  if exist "%~1" (
    rmdir /s /q "%~1"
    echo Deleted %~1\
  )
  goto :eof
  
  rem  ------------------------------------------------------------------------
  