bug#21241: 25.0.50; gfilenotify doesn't indicate when limits are reached

[Eli Zaretskii]

> From: Tassilo Horn <tsdh@gnu.org>
> Date: Wed, 12 Aug 2015 10:16:54 +0200
> 
> Well, one thing we could do was preferring plain inotify over glib's
> GFileMonitor when both are available.  On my GNU/Linux box both are
> available and configure chose gfilenotify as the default.

I wonder if we should revert our decision to prefer gfilenotify if
available, and instead use it only if there's no other supported
method.  It begins to sound more and more like gfilenotify is more
trouble than it's worth.