Merged revisions 172517 via svnmerge from

https://origsvn.digium.com/svn/asterisk/branches/1.4

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  r172517 | twilson | 2009-01-30 11:47:41 -0600 (Fri, 30 Jan 2009) | 37 lines
  
  Fix feature inheritance with builtin features
  
  When using builtin features like parking and transfers, the AST_FEATURE_* flags
  would not be set correctly for all instances when either performing a builtin
  attended transfer, or parking a call and getting the timeout callback.  Also,
  there was no way on a per-call basis to specify what features someone should
  have on picking up a parked call (since that doesn't involve the Dial() command).
  There was a global option for setting whether or not all users who pickup a
  parked call should have AST_FEATURE_REDIRECT set, but nothing for DISCONNECT,
  AUTOMON, or PARKCALL.
  
  This patch:
  1) adds the BRIDGE_FEATURES dialplan variable which can be set either in the
  dialplan or with setvar in channels that support it.  This variable can be set
  to any combination of 't', 'k', 'w', and 'h' (case insensitive matching of the
  equivalent dial options), to set what features should be activated on this
  channel.  The patch moves the setting of the features datastores into the
  bridging code instead of app_dial to help facilitate this.
  
  2) adds global options parkedcallparking, parkedcallhangup, and
  parkedcallrecording to be similar to the parkedcalltransfers option for
  globally setting features.
  
  3) has builtin_atxfer call builtin_parkcall if being transfered to the parking
  extension since tracking everything through multiple masquerades, etc. is
  difficult and error-prone
  
  4) attempts to fix all cases of return calls from parking and completed builtin
  transfers not having the correct permissions
  (closes issue #14274)
  Reported by: aragon
  Patches: 
        fix_feature_inheritence.diff.txt uploaded by otherwiseguy (license 396)
  Tested by: aragon, otherwiseguy
  
  Review http://reviewboard.digium.com/r/138/
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git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@172580 65c4cc65-6c06-0410-ace0-fbb531ad65f3