The preprocessor directives in win/tty/wintty.c were crossed-up
under MSDOS build. I think I got them straightened out now.
For a crosscompile situation, the tilemap utility (which runs on
the host) needs to produce an output src/tile.c that is compatible
for the target platform.
Don't use ENHANCED_SYMBOLS under MSDOS, for now anyway.
36d3b64326