live_dahdi: Add a new command: symlink_ast, to make the system's /etc/asterisk/dahdi-channels.conf a symlink to the one generated by 'reload' / 'genconf'. If the system dahdi-channels.conf is a generated one and has not edited, there's no real harm with running this. Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com> git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@10057 a0bf4364-ded3-4de4-8d8a-66a801d63aff