* configure.in: now h8 is a coff target
* cpu-h8300.c: fix various disassembly problems
* libcoff.h: took out some code which has been #0ed for a long
time.
* targets.c: added h8 coff
* coff-a29k.c, coff-i386.c, coff-i960.c, coff-m68k.c, coff-m88k.c
added new macro RTYPE2HOWTO to take a load of #ifdefs out of
coffcode.h
* coffcode.h: Started to change the way machine dependencies are
handled, from the nest of #ifdefs to macros defined in the
including coff-<foo>.c
