[PATCH] Minimize sysdeps code involved in defining major/minor/makedev.

[Zack Weinberg]

On Thu, Apr 28, 2016 at 9:39 PM, Zack Weinberg <zackw@panix.com> wrote:
> In my previous round of patches to deprecate sys/types.h including
> sys/sysmacros.h, there was some confusion about which parts were new and
> which parts were moving code around, so I decided to separate out the
> moving code around.  I was going to post this when I'd revised the whole
> thing, but Roland's request for more generally useful __has_extension
> means I have to think about that some more, and this bit is done,
> independently applicable, hopefully uncontroversial, and much bigger
> than everything else.  So here it is as its own thing.

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