The call pickup feature did not work on DAHDI devices for anything other than
feature codes beginning with * since all feature codes in chan_dahdi were
originally hard-coded to begin with *. This patch is also applied to
chan_dahdi.c to fix this bug with radio modes.
(closes issue AST-621)
Review: https://reviewboard.asterisk.org/r/1336/
git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@330705 65c4cc65-6c06-0410-ace0-fbb531ad65f3