Backporting CRDS removal patch to 3.3.x (Was: remove CRDS support from m68k back-end)

[Jim Wilson]

Bernardo Innocenti wrote:
> m68k-crds-unos* has been declared obsolete in 3.3, so killing it
> completely in 3.3.1 would be ok. I would be happy to provide a patch
> for the branch if there was even a small chance of seeing it accepted.

The branch is only open for patches that fix bugs that are regressions. 
  This doesn't seem to qualify.

Jim