* coff-svm68k.c: New file. Just defines some macros and includes
coff-m68k.c.
* coff-m68k.c: Add functions to handle common addends, moved in
from cf-m68klynx.c. Control them using COFF_COMMON_ADDEND macro.
Control whether relocs are visible using STATIC_RELOCS.
* cf-m68klynx.c: Simplify greatly: just define macros to control
coff-m68k.c.
* coff-aux.c: Likewise. Just leave add_one_symbol routine.
* targets. (m68ksysvcoff_vec): Declare.
(bfd_target_vector): Add m68ksysvcoff_vec.
* config.bfd (m68*-motorola-sysv*): New target.
* configure.in (m68ksysvcoff_vec): New vector.
* configure: Rebuild.
* Makefile.in: Rebuild dependencies.
(BFD32_BACKENDS): Add coff-svm68k.o.
(BFD32_BACKENDS_CFILES): Add coff-svm68k.c.
