ok_for_epilogue_p): Delete epilogue delay slot functions.
	(m88k_begin_prologue m88k_end_prologue m88k_expand_prologue): New
	functions replacing m88k_output_prologue.
	(m88k_begin_epilogue m88k_end_epilogue m88k_expand_epilogue): Ditto.
	(preserve_registers): Delete epilogue delay slot mechanism and
	change to output insns.
	(emit_add, emit_ldst): New functions.

From-SVN: r1346