added declaration for `trampoline' bytecode segment.

From-SVN: r5387

gcc/config/m68k/m68k.c

@@ -2300,6 +2300,9 @@ strict_low_part_peephole_ok (mode, first_insn, target)
   return 0;
 }
 
+/* Trampoline code for the function entry.  */
+struct bc_seg *trampoline;
+
 /* Emit the machine-code interface trampoline at the beginning of a byte
    coded function.  The argument is a label name of the interpreter
    bytecode callinfo structure; the return value is a label name for