[PATCH] posix: Sync gnulib regex implementation

[Florian Weimer]

On 06/29/2018 05:26 PM, Paul Eggert wrote:
> As I recall the last time I suggested adding it, the only concern raised 
> was over the licensing boilerplate at the start of the file. I have 
> fixed that in Gnulib, so as far as I know the concerns have been 
> addressed. We can make intprops.h's addition independent by separating 
> its addition into a separate patch, as I proposed in my most-recent email.

Most of intprops.h is untestable due to lack of relevant implementations 
existing out there on which the code could be tested, so I think it's 
not maintainable and does not match current glibc quality standards.

Florian