Merged revisions 332654 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/10

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  r332654 | kmoore | 2011-08-19 14:59:34 -0500 (Fri, 19 Aug 2011) | 8 lines
  
  Make CONFBRIDGE_INFO behave more nicely
  
  CONFBRIDGE_INFO doesn't behave as well in edge cases as MEETME_INFO.  With this
  patch, CONFBRIDGE_INFO should behave in a much more reasonable manner when
  presented with invalid conferences and keywords.
  
  Review: https://reviewboard.asterisk.org/r/1359/
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@332655 65c4cc65-6c06-0410-ace0-fbb531ad65f3