nvda

b834a4e6 - Ensure that scons.bat and other high-level commands correctly propagate their error codes.

Ensure that scons.bat and other high-level commands correctly propagate their error codes. Specifically: * scons.bat should execute venvCmd.bat with call, like all of the other high-level batch scripts. * On errors in batch scripts, use goto :EOF rather than exit /b %ERRORLEVEL% (which does not always seem to work) * venvCmd.bat: abort early if there was an error ensuring and activating the virtual environment.