This patch adds a sequence field to CDRs that can be combined with the linkedid or uniqueid field to uniquely identify a CDR.

(closes issue #15180)
Reported by: Nick_Lewis
Patches:
      cdr-sequence10.diff uploaded by mnicholson (license 96)
Tested by: mnicholson


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@227435 65c4cc65-6c06-0410-ace0-fbb531ad65f3