Changes for a `m88k-motorola-sysv3'

[Jeffrey A Law]

  In message < 199709102150.OAA19129@cygnus.com >you write:
  > m88k/dolph.h includes m88k/sysv3.h.  I think the right way to fix this is
  > to move the definition of INITIALIZE_TRAMPOLINE from dolph.h to sysv3.h,
  > and then change libgcc2.c to check __sysV88__ instead of __DOLPHIN__
  > (both the dolph.h and sysv3.h ports define __sysB88__).
Note that texXD88.h also includes sysv3.h.  I don't know if that
trampoline code is suitable in that case.

Jeff