[Swan-commit] Changes to ref refs/heads/master

[D. Hugh Redelmeier]

New commits:
commit 85d57465024644151156cae6bae6cb2abfddc1ee
Author: D. Hugh Redelmeier <hugh at mimosa.com>
Date:   Fri Apr 25 03:01:35 2014 -0400

    Exploit GCC's attribute warn_unused_result
    
    - wrap the attribute in a macro "MUST_USE_RESULT"
    
    - apply the attribute to all the packet.h functions that can
      return a failure indication.
    
    - Fix up the fallout.  Sometimes it causes new functions to be marked
      with the attribute.  Failures will no longer be ignored.
    
    - minor tidying when adjacent problems were noted
    
    - logging change: when padding is suppressed for CheckPoint,
      continue logging that, but suppress a second message.
      See close_message().
    
    There are other functions that should have this attribute.