Fixup failed enemy type conversions

enemyReplacements=[
("enemies/scathelocke", "enemies/scathelocke.txt"),
("enemies/antlion_burster", "enemies/antlion_burster.txt"),
("enemies/zombie_brute", "enemies/zombie_brute.txt"),
("enemies/antlion_spitter", "enemies/antlion_spitter.txt"),
("enemies/zombie_iceclaw", "enemies/zombie_iceclaw.txt"),
("enemies/antlion_blinker", "enemies/antlion_blinker.txt"),