bug#19438: 24.4; system-name bad cache

[Leo Liu]

On 2014-12-28 02:13 +1100, Stefan Monnier wrote:
> Maybe we could mark it obsolete, tho I'm not completely sure what
> replaces it.  Random thoughts:
> - "it" is unclear, since currently the var and the function are just 
> identical.
> - this not-very-useful functionality occasionally causes 30s wait at
>   startup time, so it would be good to get rid of the DNS lookup.

I am mostly against having a variable and a function for a simple small
feature. Such feature should be straightforward to use with either the
variable or the function public. With Paul's change it only makes sense
to use (system-name), the variable system-name just provides a way to
override it. Worst comes to worst, they can advise it.

Leo