Patch to properly assemble/disassemble ColdFire MAC/EMAC instructions

[Nick Clifton]

Hi Peter,

>Enclosed is an updated patch to address points 1, 2 and 4. I'll post
>another patch with the testcases (one for MAC, other for EMAC) once I
>figure out how to run gas and objdump with different args (-mcfv4,
>-mcfv4e) to indicate MAC/EMAC respectively.
>  
>
Thanks very much - I have applied this version of the patch.

Cheers
  Nick