[Toybox] [PATCH] cpio: add -F and ignore -u

[ibid.ag at gmail.com]

Support -F, and ignore -u since that's what we do anyway.
(Really, checking the original file date is the Right Thing, but I
haven't written it yet.)

--

This is two of the flags discussed.
I accidentally lost my work on -d, but that may have been a good
thing (may have been a dead-end/bad approach)
-v has a fun bit where 
 if you're extracting files, it writes the name to stderr;
 if you're listing files, it uses ls -l format.
Again, not sure how to go about this.
--no-absolute-filenames hasn't been touched yet, but I'll do it next.
-m I need to read more of the toybox code, 
-f needs work that I don't get, and I need a better look at how it works... 
(listing patterns is supposed to work like grep -e $1 -e $2 ... in
choosing which files to extract
-f pattern is like grep -v pattern)

Thanks,
Isaac Dunham
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