configure.bat exits with a success exit code even if meson fails

[cauebs]

This leads to misleading CI runs that mark the configure step as successful and then the build step fails because the build directory doesn't exist.

However, this is not a huge problem, and our goal in the long run is probably to get rid of this script.

[cauebs]

Personal take: if we anticipate the need of more changes in the future, I'd be very willing to replace this with a readable Python script.

[JPTIZ]

Personal take: if we anticipate the need of more changes in the future, I'd be very willing to replace this with a readable Python script.

You have my 👍 flag.