ompio: always return valid info from FILE_GET_INFO #1638
                
     Merged
            
            
          
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MPI-3.1 says that even if no info keys are set on the file, we need to
return a new, empty info.
Thanks to @dalcinl for identifying the issue.
Fixes #1630
Signed-off-by: Jeff Squyres [email protected]
@edgargabriel Please review.