[cond-optab] final tweaks part 1

[Paolo Bonzini]

> I assume targets not mentioned were fine after these changes?

Yes.  I hope I'll send the final results on Tuesday.

>> 	* config/mmix/mmix.md (movdfcc): Do not handle LE and GE.
> 
> Ok.
> 
>> 	* config/cris/cris.c (cris_normal_notice_update_cc): Handle btstq
>> 	on one bit.
> 
> Not strongly, but I'd write "Reinstate code to handle..."

Yes, though this won't end up in the merge changelog.

My initial tests only looked for 1-bit extractions and the full
testsuite of course covered also >1 bit extractions.

Paolo