* nindy-share/*, remote-nindy.c: Extensive hacking to make it
conform to GDB conventions like using memcpy not bcopy, serial.h,
etc. This is to make it host on Solaris, AIX, etc.
* Makefile.in: Reflect removed nindy-share files.
* config/i960/nindy960.mt (TDEPFILES): Remove ttybreak.o.
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.