Support for ELF's STT_COMMON symbol type

[Nick Clifton]

Hi Daniel,

>>   * Has a configure time option to enable the setting of the STT_COMMON type on 
>> symbols in generated executables.  By default this option is disabled, so the 
>> linker should continue to work with the current crop of loaders.
> 
> I don't really like this :-(  Different people's builds of binutils
> will trigger different bugs for the same target.  I suppose it's
> reasonable, but please remove this:
> 
> +  # XXX FIXME: Add code to test the loader here.
> 
> Having binutils built on a new system by default produce binaries that
> would not work on older systems would be a real pain to figure out.

You mean always default to not generating STT_COMMON symbols unless the user 
had explicitly requested them from the configure command line ?  OK, I can do that.

Cheers
   Nick