and remote-st2000.c to remote-st.c for 14-char filenames. config/m68k/{es1800,st2000}: Use the new names.
config files moved to an appropriate config/<cpu> subdirectory. * nm-*, xm-*, tm-*: All native, host, and target files, which get linked to nm.h, xm.h, and tm.h respectively by configure, moved to appropriate config/<cpu> subdirectory.