BUG emscripten and wasm infinite copy loop on project generation.

[Paolo-Oliverio]

I'm not able to reproduce it at the moment but I encountered an infinite copy loop on those 2 platforms possibly due to how I named project / debug dir or -to dir as possibly changing just them I never got that issue again.

emscripten also don't like debug directories in bin/emscripten and this could be an hint for this bug . if it is set to bin/emscripten it requires an empty emscripten dir where kfile.js is.

placeholder I'll post more details as soon I fond a reproducible setup for the bug.