[PATCH] backends: Ignore GCC8 -Wpacked-not-aligned for m68k_corenote.c.

[Mark Wielaard]

On Thu, 2017-10-26 at 16:28 +0200, Mark Wielaard wrote:
> The GCC8 -Wpacked-not-aligned warns if a structure field with
> explicit padding in a packed structure will be misaligned. m68k
> prstatus core notes are described by a packed structure which has
> such aligned structure fields.

And now pushed to master.