Update CDR variables before pbx starts (overlap dial)

Allows CDR variables added in cdr.c:set_one_cid to become visable during the call.

(issue #16638)
Reported by: alecdavis
Patches: 
      cdr_update.diff2.txt uploaded by alecdavis (license 585)
Tested by: alecdavis



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@241187 65c4cc65-6c06-0410-ace0-fbb531ad65f3