[PATCH] Update get_standard_cache_dir for macOS

[Eli Zaretskii]

> From: Tom Tromey <tom@tromey.com>
> Cc: Tom Tromey <tom@tromey.com>,  gdb-patches@sourceware.org
> Date: Fri, 14 Sep 2018 12:45:04 -0600
> 
> >>>>> "Eli" == Eli Zaretskii <eliz@gnu.org> writes:
> 
> Eli> (I thought that "on most systems" is the way to avoid describing what
> Eli> happens on each system out there, and I don't see why we should be
> Eli> eager to cater to macOS so much.  But that's me.)
> 
> I can't tell if this is a critique of the documentation or the code.

Documentation only, of course.

> For the documentation, I'm happy to change it however you like.

I just voiced my opinion that this detail about macOS, and only about
it, seems at odds with our general tendency not to describe
proprietary systems in too much detail.  But I'm not going to block
this change just because I was surprised.  I wonder what others think.