Build broken in libstdc++ on x86_64-linux

[Jan Hubicka]

> Jan Hubicka wrote:
> > I am testing patch for that still.
> > The current version is (updated per Joseph's comment about COMDAT making sence
> > on !PUBLIC functions).
> >   
> Thanks Honza, I just built successfully r154128

Note that there are still testsuite regressions found by the sanity
check.  The -fno-weak problem in G++ testsuite I just mentioned to Mark
and another problem in objc related to common variables that are not
public that are IMO also not sane.  I will post mail after little
additonal testing.
> 
> Paolo.*
> *