Support mouse scroll-wheel mapping to up/down arrow keys by setting...

Support mouse scroll-wheel mapping to up/down arrow keys by setting CON_MOUSE_REPORT flag in sbbs_t::console (JS console.status).
This also means that the mouse hot-spot support now uses XTerm "normal tracking mode", so mouse button releases are also reported by the terminal (and eaten by inkey(), when CON_MOUSE_PASSTHRU is not enabled).