Enable compiler_param_file in Windows MSVC toolchain

[fmeum]

Fixes #5163

[fmeum]

@oquenchil The tests fail as they inspect the logs and search for compiler flags. Should I make them look into the param file or, probably better, inspect aquery output instead?

[oquenchil]

@oquenchil The tests fail as they inspect the logs and search for compiler flags. Should I make them look into the param file or, probably better, inspect aquery output instead?

I was going to suggest that usually the way we do this is to get to the parameter file writing action and look at the flags there instead. Such a test would be easily converted to a Starlark test. But specifically for compiler_param_file there isn't a separate action, so as you are suggesting, we need a strategy that is part of an integration test.

Do these compiler flags show up in aquery? If they do, that's probably better than reading the parameter file since it avoids execution.

[oquenchil]

Thank you for the very quick PR Fabian.

[fmeum]

@oquenchil Tests are passing now. I also added a test for long command lines based on your gist.

[oquenchil]

Thank you Fabian!