GDB/MI reporting non-ASCII file names

[Eli Zaretskii]

> Date: Fri, 09 Oct 2015 17:48:22 +0100
> From: Pedro Alves <palves@redhat.com>
> CC: gdb@sourceware.org
> 
> > Would something like the following be acceptable (if accompanied with
> > the suitable changes to NEWS and the manual)?
> > 
> 
> I wonder whether we should we use isprint instead of removing
> the condition entirely?

'isprint' is locale-dependent, do we really want that dependency?

> If this could be covered by a test it'd be great.

I don't have an easy access to a system where the test suite could be
run, and my Tcl knowledge is limited to trivial changes of existing
code.  So I'd be glad if someone else could write the test for this.