PR 43852: new configure option --disable-libstdcxx-verbose

[Mike Stump]

On Aug 27, 2012, at 10:15 AM, Jonathan Wakely wrote:
> Unless anyone has objections I'm going to commit this to trunk,

> implementing Sebastian's idea to disable the verbose terminate handler
> and the "pure virtual function called" message, which write to stderr
> when a process terminates. This allows embedded systems to avoid
> pulling in the demangler and I/O code, reducing the footprint of
> libstdc++.

So, I was thinking about this a little...  Native compilers usually want the pretty verbose stuff and can usually pay the price.  Cross compilers as a class, are less able to pay the price.  Maybe we want to default based merely on target != host?  I know in my cross compiler, I think I'd rather turn it off.  Not a bug point... but I thought I'd mention it.