CXXFORTH_DISABLE_MAIN vs CXXFORTH_NO_MAIN

[nonchip]

according to the code in cxxforth.cpp[.md], the flag is called CXXFORTH_NO_MAIN, but both cxxforth.h.in and CMakeLists.txt set CXXFORTH_DISABLE_MAIN. pretty sure that's a bug?

also, it might be useful to have it also disable MAIN/WELCOME/ABOUT, since you probably don't want a dependency on INCLUDED and a giant license blurb either when dealing with embedding?