missing c-header files for memcpy and printf

[mittelmark]

The g++ compiler needs to include the header for memcpy and the header for printf.

• in ckwargs.cpp the function memcpy is used, this needs for g++ the header <cstring>.
• in SomeFunction.cpp the function printf needs the inclusion of <cstdio>

I finally got this fixed and could compile the code on Linux with g++ 12.

[Sagebox]

Thanks. That's odd. I will put them into the respective files. On my main environment they are somehow automatically included.

Weird. The error completely makes sense. I can't reproduce it, but it won't hurt to add them.

I'll be able to test more in gcc vs. msvc coming up.