[PATCH,z80] Treat undocumented instruction sli properly.

[Nick Clifton]

Hi Gunther,

>> 	(emit_mr_unportable): New function.
> 
> The ChangeLog entry does not agree with the actual modification.
> In the config/tc-z80.c the function name is "emit_mr_unport".
 Thanks for pointing this out.  I have corrected the changelog entry.

Cheers
  Nick