Merged revisions 280235 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.8

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  r280235 | rmudgett | 2010-07-28 15:12:16 -0500 (Wed, 28 Jul 2010) | 9 lines
  
  Merged revisions 280229 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.6.2
  
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    r280229 | rmudgett | 2010-07-28 14:57:49 -0500 (Wed, 28 Jul 2010) | 2 lines
    
    Add missing enum value "unknown" to the SS7 called_nai and calling_nai config options.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@280247 65c4cc65-6c06-0410-ace0-fbb531ad65f3