Fix SYS_PREFIX isn't available in post-link scripts
Fix SYS_PREFIX isn't available in post-link scripts

weebygames/tty.js,weebygames/tty.js,ContinuumIO/tty.js,ContinuumIO/tty.js,weebygames/tty.js,jsio-private/tty.js,jsio-private/tty.js,ContinuumIO/tty.js,jsio-private/tty.js,jsio-private/tty.js,weebygames/tty.js