Make the separator at the end of generated table lines optional

[Eyal Rozenberg]

The codebase allows for avoiding the final separator at the end of a line, using a compiler define (EOL_HANDLING). Let's support that via the build configuration with CMake. There's a fork which forced this issue by simply adding this define in the Makefile - jfdiazl (or jianlirong).

_{(this issue mirrors this one for ssb-dbgen.)}