Fixing namespace issues for variables

[Florian Weimer]

On 10/23/2015 02:13 PM, Joseph Myers wrote:
> On Fri, 23 Oct 2015, Florian Weimer wrote:
> 
>> For real global variables, this isn't pretty, but I think it is
>> acceptable (if the ELF specifics work out, including size changes, which
> 
> signgam is an int; there's no reason for its size to change.

I was worried about a conflicting size for an interposed definition in
the main program.  This concern applies to an alias-based solution as
well.  I simply don't know if this something to worry about due to my
lack of ELF knowledge.

Florian