bug#25707: [PATCH] grep: don't forcefully strip carriage returns

[Paul Eggert]

On 02/15/2017 06:23 AM, Eric Blake wrote:
> xfreopen() may need a patch

Thanks for pointing out the problems with my suggestion. I think I'd 
rather leave xfreopen alone, as silently adjusting its argument from 
"wb" to "ab" might cause other problems. Instead, I added a Gnulib 
module to set the file's text-vs-binary mode and changed grep to use 
that, by installing the attached patches, which I hope address your 
comments.

0001-build-update-gnulib-submodule-to-latest.patch
Description: Source code patch

0002-Fix-up-recent-U-patches.patch
Description: Source code patch