Proposed patch for HP-UX issues

[Joseph S. Myers]

On Sat, 23 Jul 2005, Mark Mitchell wrote:

> 2005-07-23  Mark Mitchell  <mark@codesourcery.com>
> 
> 	* dwarf2out.c (gen_variable_die): Treat un-emitted COMDAT
> 	variables as declarations, rather than definitions.

This passes testing and fixes all the failures the original patch 
introduced on 4.0 branch on hppa64-hp-hpux11.23.

-- 
Joseph S. Myers               http://www.srcf.ucam.org/~jsm28/gcc/
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