Include original position in TRANSFER entries written to queue_log.

(closes issue #12888)
Reported by: slavon
Patches:
      app_queue_transfer_patch_trunk.diff uploaded by slavon (license 288)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@123828 65c4cc65-6c06-0410-ace0-fbb531ad65f3