message: Simplify installnativeplatform.bat - there's no need for an
  envvar or cd/popd.
diff: -REM Installs local builds of the platform-specific native platform packages for Windows.
  +@echo off
  +echo Installing local build of the platform-specific native platform packages for use by examples and tests
  +if not exist .\common goto :baddir
  +if not exist .\tools goto :baddir
  +if not exist .\tools\native-platform-installer goto :baddir
  -set iModelJsCoreDir=%~dp0
  +xcopy /Y /I %OutRoot%Winx64\packages\imodeljs-native-platform-api common\temp\node_modules\@bentley\imodeljs-native-platform-api
  +xcopy /Y /I /S %OutRoot%Winx64\packages\imodeljs-n_8-win32-x64 common\temp\node_modules\@bentley\imodeljs-n_8-win32-x64
  +xcopy /Y /I /S %OutRoot%Winx64\packages\imodeljs-n_8-win32-x64 tools\native-platform-installer\node_modules\@bentley\imodeljs-native-platform-node\node_modules\@bentley\imodeljs-n_8-win32-x64
  +xcopy /Y /I /S %OutRoot%Winx64\packages\imodeljs-e_2-win32-x64 common\temp\node_modules\@bentley\imodeljs-e_2-win32-x64
  +xcopy /Y /I /S %OutRoot%Winx64\packages\imodeljs-e_2-win32-x64 tools\native-platform-installer\node_modules\@bentley\imodeljs-native-platform-electron\node_modules\@bentley\imodeljs-e_2-win32-x64
  -cd %ImodelJsRoot%
  -xcopy /Y /I %OutRoot%Winx64\packages\imodeljs-native-platform-api %iModelJsCoreDir%common\temp\node_modules\@bentley\imodeljs-native-platform-api
  -xcopy /Y /I /S %OutRoot%Winx64\packages\imodeljs-n_8-win32-x64 %iModelJsCoreDir%common\temp\node_modules\@bentley\imodeljs-n_8-win32-x64
  -xcopy /Y /I /S %OutRoot%Winx64\packages\imodeljs-n_8-win32-x64 %iModelJsCoreDir%tools\native-platform-installer\node_modules\@bentley\imodeljs-native-platform-node\node_modules\@bentley\imodeljs-n_8-win32-x64
  -xcopy /Y /I /S %OutRoot%Winx64\packages\imodeljs-e_2-win32-x64 %iModelJsCoreDir%common\temp\node_modules\@bentley\imodeljs-e_2-win32-x64
  -xcopy /Y /I /S %OutRoot%Winx64\packages\imodeljs-e_2-win32-x64 %iModelJsCoreDir%tools\native-platform-installer\node_modules\@bentley\imodeljs-native-platform-electron\node_modules\@bentley\imodeljs-e_2-win32-x64
  -popd
  \ No newline at end of file
  +goto :xit
  +:baddir
  +echo Change to an imodeljs-core directory before running this script.
  +:xit
  \ No newline at end of file
  