build_helper_win64.bat compiling in debug mode instead of release

[JaMa-95]

I compiled the project with the build_helper_win64.bat script and included all libs and dlls to my project.
When using my executable on another system I got the following error: vcruntime140d.dll and ucrtbased.dll missing (https://answers.microsoft.com/en-us/windows/forum/all/missing-msvcp140ddll-vcruntime140ddll-and/46d00f17-4050-4fbe-b46f-3791fbc28311)(https://stackoverflow.com/questions/59494854/c-program-not-running-on-windows-systems-without-vs-installed-vcruntime140-dl).

This error results from a dependency being compiled in debug mode, which requires additonal vc runtimes on the system to execute the debug mode.

I tracked the error down to the mcl_core.dll, mcl_connectivity.dll and mcl_deployment.dll. After compiling this dlls by hand with code generation Multi-threaded DLL /MD everything worked fine.

I was not able to adapt this changes to the build_helper_win64.bat script.
It would be nice if you could do so.

Thanks.