Merged revisions 378889 via svnmerge from

file:///srv/subversion/repos/asterisk/trunk

........
  r378889 | rmudgett | 2013-01-09 20:40:50 -0600 (Wed, 09 Jan 2013) | 8 lines
  
  * Simplify native bridge code in ast_channel_bridge().
  
  * Fix an unbalanced manager_bridge_event(unlink) call if
  AST_SOFTHANGUP_UNBRIDGE is set in ast_channel_bridge().
  
  * Make ast_channel_bridge() use common cleanup code when leaving the
  bridge.
........


git-svn-id: https://origsvn.digium.com/svn/asterisk/team/mmichelson/threadpool@378898 65c4cc65-6c06-0410-ace0-fbb531ad65f3