config/mips/{mipsm3.mt,mipsm3.mh}, config/ns32k/{ns32km3.mt,ns32km3.mh}: Use correct names for TM_FILE and XM_FILE. Replace host files *mach3-xdep.o with native files *m3-nat.o. Replace host file os-mach3.o with native file m3-nat.o.