get linked to nm.h, xm.h, and tm.h respectively by configure,
moved to appropriate config/<cpu> subdirectory.
* nm-sysv4.h, xm-sysv4.h, tm-sysv4.h, tm-sunos.h, nm-trash.h:
Native, host, and target files that are common across more than
one cpu architecture and included by one of the configured
native, host, or target files, get moved to config directory.
* Based on patch from Martin Walker <maw@netcom.com>:
* nm-i386sco4.h: New file. Like nm-i386sco.h, but define
ATTACH_DETACH, PTRACE_ATTACH and PTRACE_DETACH.
* config/i386sco4.mh (NAT_FILE): Use nm-i386sco4.h.