Merged revisions 175597 via svnmerge from

https://origsvn.digium.com/svn/asterisk/trunk

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  r175597 | dvossel | 2009-02-13 14:11:55 -0600 (Fri, 13 Feb 2009) | 4 lines
  
  Fixed iax2 key rotation backwards compatibility
  
  Turns key rotation back on by default.  Added bit into encryption IE to indicate whether or not key rotation is supported or not. If it is not supported then it is not enabled, which insures backwards compatibility.  This eliminates the need for the keyrotate option in iax.conf, so it has been removed.  
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@176248 65c4cc65-6c06-0410-ace0-fbb531ad65f3