Merged revisions 329528 via svnmerge from

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

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  r329528 | jrose | 2011-07-26 08:52:34 -0500 (Tue, 26 Jul 2011) | 24 lines
  
  Merged revisions 329527 via svnmerge from 
  https://origsvn.digium.com/svn/asterisk/branches/1.8
  
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    r329527 | jrose | 2011-07-26 08:25:35 -0500 (Tue, 26 Jul 2011) | 17 lines
    
    Fixes some voicemail forwarding behavior based around prepend mode.
    
    Formerly, prepend forwarding would have the user record a message with no useful prompt
    and an expectation for the user to push a button on the phone when finished recording.
    If a length of silence was detected instead, the recording would be canceled and the user
    would re-enter the voicemail forwarding menu. Subsequent time-outs in prepend recording
    would also bug out in the sense that they would write over the original message and get
    sent to the recipient regardless of whether they timed out or were accepted. This patch
    fixes this issue and adds a prompt which will be played after a timeout informing the
    user that they needed to press a button. Currently, the sound files that we have are
    somewhat inadquate for this, so after the call we simply have Allison say "Please try
    again. Then press pound." which actually relies on two separate sound files. Just one
    would be more appropriate.
    
    reporter: Vlad Povorozniuc
    Review: https://reviewboard.asterisk.org/r/1327/ 
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@329530 65c4cc65-6c06-0410-ace0-fbb531ad65f3