Merged revisions 284921 via svnmerge from

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

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  r284921 | twilson | 2010-09-03 11:28:18 -0500 (Fri, 03 Sep 2010) | 19 lines
  
  Merged revisions 284897 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.6.2
  
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    r284897 | twilson | 2010-09-03 11:20:45 -0500 (Fri, 03 Sep 2010) | 12 lines
    
    Merged revisions 284881 via svnmerge from 
    https://origsvn.digium.com/svn/asterisk/branches/1.4
    
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      r284881 | twilson | 2010-09-03 11:10:23 -0500 (Fri, 03 Sep 2010) | 5 lines
      
      Properly detect when a sound file doesn't exist
      
      ast_fileexists returns -1 for error and 0 for a non-existant file. The existing
      code treated missing files as though they existed.
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@284922 65c4cc65-6c06-0410-ace0-fbb531ad65f3