Redundant @deffnx and typo in manual

Hello.

I have found a couple minor bugs in the manuals of findutils 4.9.0.

Line 389 of find.texi seems to be redundant:

388 @deffn Option -files0-from file
389 @deffnx Option -files0-from file

In line 950 of find-maint.texi there is a typo: s/p[art/part/

950 The GNU findutils mantainer has issued a patch as p[art of this
951 announcement.  The patch appears below.

It would also be nice to pass the option "--no-split" to makeinfo, because 
the find.info manual is barely larger than 300 kB and is split in three 
unequal parts with one of them containing about 94% of the whole manual.

Thanks,
Antonio.