For some odd reason, loading app_mixmonitor was fine, but res_monitor was not.
This patch fixes a set of issues related to func_periodic_hook exporting the
beep functions that gets res_monitor working again.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@412910 65c4cc65-6c06-0410-ace0-fbb531ad65f3

(closes issue #17475)
 Reported by: tilghman
 
Review: https://reviewboard.asterisk.org/r/695/


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@276490 65c4cc65-6c06-0410-ace0-fbb531ad65f3

(closes issue #15193)
 Reported by: eliel
 Patches: 
       20091111__issue15193.diff.txt uploaded by tilghman (license 14)


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@231439 65c4cc65-6c06-0410-ace0-fbb531ad65f3